FR2732264A1 - Ultrasonic welding appts. - Google Patents

Ultrasonic welding appts. Download PDF

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Publication number
FR2732264A1
FR2732264A1 FR9504066A FR9504066A FR2732264A1 FR 2732264 A1 FR2732264 A1 FR 2732264A1 FR 9504066 A FR9504066 A FR 9504066A FR 9504066 A FR9504066 A FR 9504066A FR 2732264 A1 FR2732264 A1 FR 2732264A1
Authority
FR
France
Prior art keywords
ultrasonic welding
welding device
sonotrode
yoke
anvil
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
FR9504066A
Other languages
French (fr)
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FR2732264B1 (en
Inventor
Daniel Doncque
Joel Fiori
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.)
PLG PACKAGING
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PLG PACKAGING
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 PLG PACKAGING filed Critical PLG PACKAGING
Priority to FR9504066A priority Critical patent/FR2732264B1/en
Publication of FR2732264A1 publication Critical patent/FR2732264A1/en
Application granted granted Critical
Publication of FR2732264B1 publication Critical patent/FR2732264B1/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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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
    • 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
    • B29C65/085—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 sonotrode
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
    • B29C66/112—Single lapped joints
    • B29C66/1122—Single lap to lap joints, i.e. overlap joints
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
    • B29C66/41—Joining substantially flat articles ; Making flat seams in tubular or hollow articles
    • B29C66/43—Joining a relatively small portion of the surface of said articles
    • 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
    • B29C66/43121—Closing the ends of tubular or hollow single articles, e.g. closing the ends of bags
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/814—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/8145—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the constructional aspects of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/81457—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the constructional aspects of the pressing elements, e.g. of the welding jaws or clamps comprising a block or layer of deformable material, e.g. sponge, foam, rubber
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/81—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
    • B29C66/82—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
    • B29C66/82—Pressure application arrangements, e.g. transmission or actuating mechanisms for joining tools or clamps
    • B29C66/822—Transmission mechanisms
    • B29C66/8222—Pinion or rack mechanisms
    • 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
    • B29C66/824—Actuating mechanisms
    • B29C66/8242—Pneumatic or hydraulic drives
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/83—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
    • B29C66/832—Reciprocating joining or pressing tools
    • B29C66/8324—Joining or pressing tools pivoting around one axis
    • B29C66/83241—Joining or pressing tools pivoting around one axis cooperating pivoting tools
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/90—Measuring or controlling the joining process
    • B29C66/92—Measuring or controlling the joining process by measuring or controlling the pressure, the force, the mechanical power or the displacement of the joining tools
    • B29C66/924—Measuring or controlling the joining process by measuring or controlling the pressure, the force, the mechanical power or the displacement of the joining tools by controlling or regulating the pressure, the force, the mechanical power or the displacement of the joining tools
    • B29C66/9261—Measuring or controlling the joining process by measuring or controlling the pressure, the force, the mechanical power or the displacement of the joining tools by controlling or regulating the pressure, the force, the mechanical power or the displacement of the joining tools by controlling or regulating the displacement of the joining tools
    • B29C66/92651—Measuring or controlling the joining process by measuring or controlling the pressure, the force, the mechanical power or the displacement of the joining tools by controlling or regulating the pressure, the force, the mechanical power or the displacement of the joining tools by controlling or regulating the displacement of the joining tools by using stops
    • B29C66/92653—Measuring or controlling the joining process by measuring or controlling the pressure, the force, the mechanical power or the displacement of the joining tools by controlling or regulating the pressure, the force, the mechanical power or the displacement of the joining tools by controlling or regulating the displacement of the joining tools by using stops said stops being adjustable
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/71—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the composition of the plastics material of the parts to be joined
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/812—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 composition, by the structure, by the intensive physical properties or by the optical properties of the material constituting the pressing elements, e.g. constituting the welding jaws or clamps
    • B29C66/8122—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 composition, by the structure, by the intensive physical properties or by the optical properties of the material constituting the pressing elements, e.g. constituting the welding jaws or clamps characterised by the composition of the material constituting the pressing elements, e.g. constituting the welding jaws or clamps
    • 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
    • B29C66/836—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
    • B29C66/8362—Rollers, cylinders or drums moving relative to and tangentially to the parts to be joined
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/90—Measuring or controlling the joining process
    • B29C66/95—Measuring or controlling the joining process by measuring or controlling specific variables not covered by groups B29C66/91 - B29C66/94
    • B29C66/951—Measuring or controlling the joining process by measuring or controlling specific variables not covered by groups B29C66/91 - B29C66/94 by measuring or controlling the vibration frequency and/or the vibration amplitude of vibrating joining tools, e.g. of ultrasonic welding tools
    • B29C66/9516—Measuring or controlling the joining process by measuring or controlling specific variables not covered by groups B29C66/91 - B29C66/94 by measuring or controlling the vibration frequency and/or the vibration amplitude of vibrating joining tools, e.g. of ultrasonic welding tools by controlling their vibration amplitude

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)

Abstract

The ultrasonic welding appts., esp. for packaging and sealing a bag or film, has a interrupted surface at the active end (40) of the sonatrode (36). The anvil (42) has an insert (52) of a polymer material, held without play on a metallic base (58). The insert (52) has a shorter life than the base (58).

Description

DISPOSITIF DE SOUDAGE PAR ULTRASONS. NOTAMMENT POUR LE
CONDITIONNEMENT SOUS FORME DE SAC OU DE FILM
L'invention est relative à un dispositif de soudage par ultrasons, notamment pour le conditionnement sous forme de sac ou de film, comprenant une sonotrode émettrice de vibrations ultrasoniques à haute fréquence, ladite sonotrode étant disposée en regard d'une enclume avec interposition d'un intervalle de travail dans lequel est engagée une ou des pièces thermoplastiques à assembler par thermosoudure ou thermofusion.ULTRASONIC WELDING DEVICE. ESPECIALLY FOR THE
PACKAGING IN BAG OR FILM FORM
The invention relates to an ultrasonic welding device, in particular for packaging in the form of a bag or a film, comprising a sonotrode emitting high frequency ultrasonic vibrations, said sonotrode being disposed opposite an anvil with interposition of a working interval in which one or more thermoplastic parts are engaged to be assembled by heat-sealing or thermofusion.

Le principe bien connu du soudage par ultrasons utilise les phénomènes de friction et d'agitation moléculaire engendrés par les vibrations ultrasoniques pour produire un échauffement au niveau du joint des pièces ou feuilles à assembler. L'effet de thermosoudure convient particulièrement pour les matières thermoplastiques ou colles thermofusibles, et les dispositifs de soudage conventionnels font généralement usage d'une enclume rigide métallique, par exemple en acier. La coopération de la sonotrode avec une enclume rigide donne des résultats satisfaisants à condition de respecter certaines conditions relatives à la géométrie, et à l'emplacement de l'assemblage. Ces conditions sont indispensables pour obtenir une bonne transmission des vibrations dont dépend la qualité du joint thermosoudé.Une pince de soudage à ultrasons équipée d'une enclume rigide convient parfaitement pour l'obturation d'un sac à valve à manchon externe, mais pas pour un manchon interne. Le choix de la soudure par ultrasons nécessite alors un sac à valve, qui est plus onéreux que les sacs à valve à manchon interne.The well-known principle of ultrasonic welding uses the phenomena of friction and molecular agitation generated by ultrasonic vibrations to produce heating at the joint of the parts or sheets to be assembled. The heat-sealing effect is particularly suitable for thermoplastics or hot-melt adhesives, and conventional welding devices generally use a rigid metal anvil, for example steel. The cooperation of the sonotrode with a rigid anvil gives satisfactory results provided that certain conditions relating to the geometry and the location of the assembly are respected. These conditions are essential to obtain good transmission of vibrations, on which the quality of the heat-sealed joint depends. An ultrasonic welding clamp equipped with a rigid anvil is perfectly suitable for sealing a valve bag with an external sleeve, but not for an internal sleeve. The choice of ultrasonic welding then requires a valve bag, which is more expensive than valve bags with internal sleeves.

L'objet de l'invention consiste à réaliser un dispositif de soudage par ultrasons permettant d'obtenir une transmission optimum des vibrations, indépendamment de la géométrie et de l'emplacement de l'assemblage.The object of the invention to provide an ultrasonic welding device for obtaining optimum transmission of vibrations, regardless of the geometry and the location of the assembly.

Le dispositif de soudage selon l'invention est caractérisé en ce que l'extrémité active de la sonotrode présente une surface discontinue, et que l'enclume comporte une chape en matière polymère prenant appui sans jeu sur une embase métallique, la dureté de la chape étant inférieure à celle de l'embase. The welding device according to the invention is characterized in that the active end of the sonotrode has a discontinuous surface, and that the anvil comprises a yoke made of polymer material bearing without play on a metal base, the hardness of the yoke being lower than that of the base.

La chape de l'enclume peut être réalisée avantageusement en un matériau à base de silicone, ou de polytétrafluroéthylène. L'emploi d'une telle chape permet d'obtenir un thermosoudage optimum, même pour des sacs à valves à manchons internes.The screed of the anvil can advantageously be made of a material based on silicone, or polytetrafluroethylene. The use of such a screed provides optimum heat sealing, even for valve bags with internal sleeves.

Selon une caractéristique de l'invention, la surface discontinue de la sonotrode peut comporter une structure à empreintes multiples, ou être agencée sur une molette.According to a characteristic of the invention, the discontinuous surface of the sonotrode can comprise a structure with multiple imprints, or be arranged on a wheel.

La chape en polymère peut être collée sur l'embase de l'enclume, ou y être encastrée au moyen d'une languette d'ancrage faisant partie intégrante de la chape, et introduite dans une rainure de forme conjuguée, ménagée dans l'embase métallique.The polymer screed can be glued to the base of the anvil, or be embedded therein by means of an anchoring tab which is an integral part of the screed, and introduced into a groove of conjugate shape, formed in the base. metallic.

L'encastrement de la chape améliore la transmission des vibrations, et facilite son remplacement en cas d'usure.The embedding of the yoke improves the transmission of vibrations, and facilitates its replacement in the event of wear.

Selon un mode de réalisation préférentielle, une pince de soudage à mâchoires mobiles comporte: -un vérin de commande porté par l'une des mâchoires, et ayant une tige mobile d'actionnement coopérant avec un levier articulé sur la partie intermédiaire de l'autre mâchoire, - une paire de pignons montés à engrenage sur deux axes parallèles pour assurer le pivotement synchronisé et en sens contraire des mâchoires lors du passage de la pince de l'état fermé vers l'état ouvert, et vice-versa, - et des moyens de butée pour ajuster l'intervalle de travail entre la sonotrode portée par l'une des mâchoires, et l'enclume agencée sur l'autre mâchoire.According to a preferred embodiment, a welding clamp with movable jaws comprises: -a control cylinder carried by one of the jaws, and having a movable actuating rod cooperating with a lever articulated on the intermediate part of the other jaw, - a pair of pinions mounted on a gear on two parallel axes to ensure the synchronized and opposite rotation of the jaws during the passage of the clamp from the closed state to the open state, and vice versa, - and stop means for adjusting the working interval between the sonotrode carried by one of the jaws, and the anvil arranged on the other jaw.

L'usage d'une chape en polymère sert en même temps de butée anti-rebond, de manière à éviter la destruction de la sonotrode lors de la fermeture brusque de la pince en l'absence de matières dans l'intervalle de travail.The use of a polymer yoke simultaneously serves as an anti-rebound stop, so as to avoid the destruction of the sonotrode during the abrupt closing of the clamp in the absence of materials in the working interval.

D'autres avantages et caractéristiques ressortiront plus clairement de la description qui va suivre d'un mode de réalisation de l'invention, donné à titre d'exemple non limitatif, et représenté aux dessins annexés, dans lesquels: - la figure 1 est une vue schématique en élévation d'une pince équipée du dispositif de soudage par ultrasons selon l'iunvention, la pince étant représentée dans l'état ouvert; - la figure 2 est une vue identique de la figure 1 dans l'état fermé de la pince; - la figure 3 montre une vue en coupe selon la ligne 3-3 de la figure 2; - la figure 4 représente une vue en coupe selon la ligne 4-4 de la figure 2; - la figure 5 est une vue de détail , à échelle agrandie du dispositif de soudage à ultrasons de la figure 1; - la figure 6 est une vue identique de la figure 5 d'une variante de réalisation.Other advantages and characteristics will emerge more clearly from the description which follows of an embodiment of the invention, given by way of nonlimiting example, and represented in the appended drawings, in which: - Figure 1 is a schematic elevation view of a clamp equipped with the ultrasonic welding device according to the invention, the clamp being shown in the open state; - Figure 2 is an identical view to Figure 1 in the closed state of the clamp; - Figure 3 shows a sectional view along line 3-3 of Figure 2; - Figure 4 shows a sectional view along line 4-4 of Figure 2; - Figure 5 is a detail view, on an enlarged scale of the ultrasonic welding device of Figure 1; - Figure 6 is an identical view to Figure 5 of an alternative embodiment.

Sur les figures 1 à 4, un dispositif de soudage 10 par ultrasons est agencé aux extrémités d'une paire de mâchoires 12,14 mobiles conformées selon une pince 16 articulée. L'entraînement des deux mâchoires 12,14 s'effectue au moyen d'un vérin 18 à mouvement de translation assujetti à la mâchoire 12 supérieure. La tige 22 de commande du vérin 18 coopère avec un levier 20 articulé sur la partie intermédiaire de la mâchoire 14 inférieure, de manière à provoquer l'écartement et le rapprochement des deux mâchoires 12,14 pendant l'opération de soudage.In FIGS. 1 to 4, an ultrasonic welding device 10 is arranged at the ends of a pair of movable jaws 12, 14 shaped according to an articulated clamp 16. The drive of the two jaws 12,14 is carried out by means of a jack 18 with translational movement secured to the upper jaw 12. The rod 22 for controlling the jack 18 cooperates with a lever 20 articulated on the intermediate part of the lower jaw 14, so as to cause the spacing and the bringing together of the two jaws 12, 14 during the welding operation.

Les deux mâchoires 12,14 sont montées à pivotement sur deux axes 24,26 parallèles, agencés entre deux flasques 28,30 d'un châssis fixe. Le mouvement de pivotement en sens contraire des deux mâchoires 12,14 est synchronisé au moyen d'une paire de pignons 32,34 montés à engrenage respectivement sur les axes 24,26.The two jaws 12,14 are pivotally mounted on two parallel axes 24,26, arranged between two flanges 28,30 of a fixed frame. The pivoting movement in the opposite direction of the two jaws 12,14 is synchronized by means of a pair of pinions 32,34 mounted with gear respectively on the axes 24,26.

Le dispositif de soudage 10 se trouve à l'opposé des pignons 32,34 et comporte une sonotrode 36 solidaire de la mâchoire 12 supérieure. La sonotrode 36 est associée à un dispositif amplificateur 38, de manière à produire des vibrations ultrasoniques pouvant avoir des fréquences comprises entre 20 khz et 50 khz. L'extrémité active 40 de la sonotrode 36 est placée en regard d'une enclume 42 fixée sur la mâchoire 14 inférieure.The welding device 10 is located opposite the pinions 32, 34 and comprises a sonotrode 36 secured to the upper jaw 12. The sonotrode 36 is associated with an amplifier device 38, so as to produce ultrasonic vibrations which can have frequencies between 20 kHz and 50 kHz. The active end 40 of the sonotrode 36 is placed opposite an anvil 42 fixed on the lower jaw 14.

Des moyens de butée 44 de fin de course comportent une vis 46 à longueur ajustable au moyen d'un contre écrou 48 de blocage pour définir avec précision l'intervalle de travail entre la sonotrode 36 et l'enclume 42 dans la position fermée de la pince 16. La dimension de l'intervalle de travail dépend de l'épaisseur des feuilles 48 ou pièces thermoplastiques à assembler. End-of-travel stop means 44 comprise a screw 46 with an adjustable length by means of a locking nut 48 to precisely define the working interval between the sonotrode 36 and the anvil 42 in the closed position of the clamp 16. The size of the working interval depends on the thickness of the sheets 48 or thermoplastic parts to be assembled.

L'amplitude des vibrations de la sonotrode 36 est réglée par l'amplificateur 38 en fonction de la nature du matériau des feuilles 48. La friction et l'agitation moléculaire engendrées par les vibrations ultrasoniques produisent un échauffement au niveau du joint des feuilles 48 à assembler, de manière à assurer une thermosoudure homogène.The amplitude of the vibrations of the sonotrode 36 is adjusted by the amplifier 38 as a function of the nature of the material of the sheets 48. The friction and the molecular agitation generated by the ultrasonic vibrations produce heating at the joint of the sheets 48 to assemble, so as to ensure a uniform heat seal.

Ce procédé de thermosoudure convient pour toutes les sortes de matériaux thermoplastiques, notamment du polycarbonate, polystyrène, polypropylène, polyamide, polyéthylène, ainsi que de papiers enduits de matériaux réactivables à chaud, etc....This heat sealing process is suitable for all kinds of thermoplastic materials, in particular polycarbonate, polystyrene, polypropylene, polyamide, polyethylene, as well as papers coated with hot-reactivable materials, etc.

En référence à la figure 5, I'extrémité active 40 de la sonotrode 36 présente une surface discontinue à dentures 50 saillantes linéaires constituant une structure à empreintes multiples. L'enclume 42 est constituée par une chape 52 en matière polymère ayant des propriétés élastiques, et apte à résister à des températures de l'ordre de 200cl. La face inférieure de la chape 52 est dotée d'une languette 54 d'ancrage en forme de tenon encastré dans un rainure 56 continue d'une embase 58 métallique ayant une dureté supérieure à celle de la chape 52. La languette 54 est rectiligne, et la chape 52 prend appui sans jeu sur l'embase 58.With reference to FIG. 5, the active end 40 of the sonotrode 36 has a discontinuous surface with linear projecting teeth 50 constituting a structure with multiple imprints. The anvil 42 is constituted by a yoke 52 made of polymer material having elastic properties, and capable of withstanding temperatures of the order of 200cl. The underside of the yoke 52 is provided with a tongue 54 for anchoring in the shape of a tenon embedded in a continuous groove 56 of a metal base 58 having a hardness greater than that of the yoke 52. The tongue 54 is rectilinear, and the yoke 52 bears without play on the base 58.

La face supérieure 59 de la chape 52 est sensiblement plane, et coopère avec les dentures 50 de la sonotrode 36 avec interposition des feuilles 48 à assembler. La présence de la chape 52 en matière polymère permet d'obtenir un thermosoudage optimum, notamment à l'occasion de la fermeture d'un sac à valve à manchon interne.The upper face 59 of the yoke 52 is substantially planar, and cooperates with the teeth 50 of the sonotrode 36 with interposition of the sheets 48 to be assembled. The presence of the yoke 52 made of polymer material makes it possible to obtain optimum heat sealing, in particular when closing a valve bag with an internal sleeve.

Un exemple de matériau utilisé pour réaliser la chape 52 peut être à base de silicone. L'effet élastique de ce matériau sert en même temps de butée antirebond, et évite la destruction de la sonotrode 36 lorsque la pince 16 est fermée brusquement en l'absence de feuilles 48 dans l'intervalle de travail.An example of the material used to make the yoke 52 may be based on silicone. The elastic effect of this material serves at the same time as an anti-rebound stop, and prevents the destruction of the sonotrode 36 when the clamp 16 is suddenly closed in the absence of sheets 48 in the working interval.

Tout autre matériau polymère peut être utilisé pour la chape 52, notamment du polytétrafluoroéthylène. Any other polymeric material can be used for the screed 52, in particular polytetrafluoroethylene.

Après un certain nombre d'opérations de thermosoudures, on peut enlever la chape 52 usée pour la remplacer par une nouvelle chape introduite dans la rainure 56 de l'embase 58 par sa languette 54. After a certain number of heat-sealing operations, the used yoke 52 can be removed to replace it with a new yoke introduced into the groove 56 of the base 58 by its tongue 54.

Selon une variante (non représentée) , la chape 52 est dépourvue de languette d'ancrage 54, et est directement collée sur l'embase 58 métallique plane.According to a variant (not shown), the yoke 52 is devoid of anchoring tongue 54, and is directly bonded to the flat metal base 58.

Sur la figure 6, la languette 54 est conformée selon une queue d'aronde coopérant avec une mortaise conjuguée de l'embase 58. La structure à dentures 50 de la sonotrode 36 est remplacée par une molette 60 striée déplaçable au moyen d'un bras 62 manipulateur, ou de tout autre moyen d'actionnement. Un tel dispositif est particulièrement avantageux pour réaliser des soudures verticales.In FIG. 6, the tongue 54 is shaped according to a dovetail cooperating with a conjugate mortise of the base 58. The toothed structure 50 of the sonotrode 36 is replaced by a serrated knurl 60 movable by means of an arm 62 manipulator, or any other means of actuation. Such a device is particularly advantageous for making vertical welds.

Le dispositif de soudage 10 peut être utilisé dans tout le domaine de l'emballage sous forme de films, notamment; - la sacherie (sachet, sac sortie de caisse, sac poubelle, sac de grande contenance à gueule ouverte, sac à valve), - le conditionnement automatique avec remplissage du type FFS, - le houssage sous film rétrécissable ou étirable. The welding device 10 can be used throughout the field of packaging in the form of films, in particular; - the baghouse (sachet, bag out of the box, garbage bag, large capacity bag with open mouth, valve bag), - automatic packaging with FFS type filling, - shrink wrapping in shrink or stretch film.

Claims (10)

REVENDICATIONS 1) Dispositif de soudage par ultrasons notamment pour le conditionnement sous forme de sac ou de film, comprenant une sonotrode (36) émettrice de vibrations ultrasoniques à haute fréquence, ladite sonotrode étant disposée en regard d'une enclume (42) avec interposition d'un intervalle de travail dans lequel est engagée une ou des pièces thermoplastiques à assembler par thermosoudure, caractérisé en ce que l'extrémité active (40) de la sonotrode (36) présente une surface discontinue, et que l'enclume (42) comporte une chape (52) en matière polymère prenant appui sans jeu sur une embase (58) métallique, la dureté de la chape (52) étant inférieure à celle de l'embase (58).1) Ultrasonic welding device in particular for packaging in the form of a bag or film, comprising a sonotrode (36) emitting high frequency ultrasonic vibrations, said sonotrode being disposed opposite an anvil (42) with interposition of a working interval in which is engaged one or more thermoplastic parts to be assembled by heat sealing, characterized in that the active end (40) of the sonotrode (36) has a discontinuous surface, and that the anvil (42) comprises a yoke (52) made of polymer material bearing without play on a metal base (58), the hardness of the yoke (52) being less than that of the base (58). 2) Dispositif de soudage par ultrasons selon la revendication 1, caractérisé en ce que la surface discontinue de la sonotrode (36) comporte une pluralité de dentures (50) saillantes formant une structure à empreintes multiples.2) ultrasonic welding device according to claim 1, characterized in that the discontinuous surface of the sonotrode (36) comprises a plurality of projecting teeth (50) forming a structure with multiple imprints. 3) Dispositif de soudage par ultrasons selon la revendication 1, caractérisé en ce que la surface discontinue de la sonotrode (36) est agencée sur une molette 60 striée déplaçable par des moyens d'actionnement.3) Ultrasonic welding device according to claim 1, characterized in that the discontinuous surface of the sonotrode (36) is arranged on a serrated wheel 60 displaceable by actuating means. 4) Dispositif de soudage par ultrasons selon la revendication 1, caractérisé en ce que la chape (52) comporte une face (59) plane du côté de l'intervalle de travail, et à l'opposé une languette (54) d'ancrage encastrée dans une rainure (56) de forme conjuguée, ménagée dans l'embase (58) métallique.4) ultrasonic welding device according to claim 1, characterized in that the yoke (52) has a face (59) plane on the side of the working interval, and opposite a tongue (54) for anchoring embedded in a groove (56) of conjugate shape, formed in the metal base (58). 5) Dispositif de soudage par ultrasons selon la revendication 4, caractérisé en ce que la languette (54) d'ancrage comprend un tenon rectiligne.5) Ultrasonic welding device according to claim 4, characterized in that the tongue (54) of anchoring comprises a straight post. 6) Dispositif de soudage par ultrasons selon la revendication 4, caractérisé en ce que la languette (54) d'ancrage est conformée en queue d'aronde.6) Ultrasonic welding device according to claim 4, characterized in that the tongue (54) of anchoring is shaped like a dovetail. 7) Dispositif de soudage par ultrasons selon la revendication 1, caractérisé en ce que la chape (52) est directement collée sur l'embase (58) métallique. 7) Ultrasonic welding device according to claim 1, characterized in that the yoke (52) is directly bonded to the metal base (58). 8) Dispositif de soudage par ultrasons selon la revendication 1, et disposé sur une pince (16) de soudage ayant une paire de mâchoires (12,14) mobiles susceptibles d'occuper une position d'écartement et une position de rapprochement correspondant respectivement à l'état ouvert et à l'état fermé de la pince (16), caractérisé en ce que la pince (16) comporte de plus:: - un vérin (18) de commande porté par l'une des mâchoires (12), et ayant une tige (22) mobile d'actionnement coopérant avec unlevier (20) articulé sur la partie intermédiaire de l'autre mâchoire (14), - une paire de pignons (32,34) montés à engrenage sur deux axes (24,26) parallèles pour assurer le pivotement synchronisé et en sens contraire des mâchoires (12,14) lors du passage de la pince (16) de l'état fermé vers l'état ouvert, et vice-versa, - et des moyens de butée (44) pour ajuster l'intervalle de travail entre la sonotrode (36) portée par l'une des mâchoires (12), et l'enclume (42) agencée sur l'autre mâchoire (14).8) Ultrasonic welding device according to claim 1, and disposed on a welding clamp (16) having a pair of movable jaws (12,14) capable of occupying a spacing position and an approximation position corresponding respectively to the open and closed state of the clamp (16), characterized in that the clamp (16) further comprises: - a control jack (18) carried by one of the jaws (12), and having a movable actuating rod (22) cooperating with a lever (20) articulated on the intermediate part of the other jaw (14), - a pair of pinions (32,34) mounted on a gear on two axes (24, 26) parallel to ensure synchronized and opposite pivoting of the jaws (12,14) during the passage of the clamp (16) from the closed state to the open state, and vice versa, - and stop means (44) to adjust the working interval between the sonotrode (36) carried by one of the jaws (12), and the anvil (42) arranged e on the other jaw (14). 9) Dispositif de soudage par ultrasons selon la revendication 8, caractérisé en ce que la sonotrode (36) est associée à un amplificateur (38) destiné à régler l'amplitude des vibrations ultrasoniques en fonction de la matière du matériau à assembler.9) Ultrasonic welding device according to claim 8, characterized in that the sonotrode (36) is associated with an amplifier (38) intended to adjust the amplitude of the ultrasonic vibrations as a function of the material of the material to be assembled. 10) Dispositif de soudage par ultrasons selon l'une des revendications 1 à 9, caractérisé en ce que la chape (52) de l'enclume (40) est réalisée avec un matériau à base de silicone, ou de polyétafluoréthylène. 10) Ultrasonic welding device according to one of claims 1 to 9, characterized in that the yoke (52) of the anvil (40) is made with a material based on silicone, or polyetafluorethylene.
FR9504066A 1995-03-31 1995-03-31 ULTRASONIC WELDING DEVICE, PARTICULARLY FOR BAG OR FILM PACKAGING Expired - Fee Related FR2732264B1 (en)

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Publication number Priority date Publication date Assignee Title
WO2002087977A2 (en) * 2001-05-02 2002-11-07 Hood Packaging Corporation Sealable valve bag and manufacturing method therefor
EP1127794A3 (en) * 2000-02-23 2003-03-12 Shikoku Kakoki Co., Ltd. Ultrasonic sealing apparatus
WO2005044542A1 (en) * 2003-11-05 2005-05-19 Daniel Suhm Method and device for print embossing surfaces
WO2006087224A1 (en) * 2005-02-18 2006-08-24 Jentschmann Ag Zürich Ultrasonic welding device for forming welded seams on textiles
DE102004013049B4 (en) * 2004-03-10 2008-11-06 Herrmann Ultraschalltechnik Gmbh & Co. Kg Ultrasonic welding device
WO2010115662A1 (en) * 2009-04-09 2010-10-14 Robert Bosch Gmbh Device for processing a packing material using ultrasound
WO2010115660A1 (en) * 2009-04-09 2010-10-14 Robert Bosch Gmbh Device for processing a packing material using ultrasound

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DE3146585A1 (en) * 1981-11-25 1983-06-01 Michael Hörauf Maschinenfabrik, 7334 Süssen Apparatus for ultrasonic welding
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EP0498364A2 (en) * 1991-02-05 1992-08-12 Giuseppe Gorini Ultrasonic device for welding and cutting natural, synthetic or mixed fabrics without fraying
US5244532A (en) * 1992-09-15 1993-09-14 Stone Container Corporation Ultrasonic anvil cartridge

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CH525755A (en) * 1971-03-09 1972-07-31 Geneco Ultrasonic welding plastic tubes - with vee shaped closure nesting within tube periphery
US3867232A (en) * 1972-05-22 1975-02-18 Eastman Kodak Co Ultrasonic splicing apparatus
DE3146585A1 (en) * 1981-11-25 1983-06-01 Michael Hörauf Maschinenfabrik, 7334 Süssen Apparatus for ultrasonic welding
DE3519909A1 (en) * 1985-06-04 1986-12-04 Behn Maschinenfabrik GmbH & Co KG, 4150 Krefeld Device for welding the tubular valve of valve sacks
EP0498364A2 (en) * 1991-02-05 1992-08-12 Giuseppe Gorini Ultrasonic device for welding and cutting natural, synthetic or mixed fabrics without fraying
US5244532A (en) * 1992-09-15 1993-09-14 Stone Container Corporation Ultrasonic anvil cartridge

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1127794A3 (en) * 2000-02-23 2003-03-12 Shikoku Kakoki Co., Ltd. Ultrasonic sealing apparatus
WO2002087977A2 (en) * 2001-05-02 2002-11-07 Hood Packaging Corporation Sealable valve bag and manufacturing method therefor
WO2002087977A3 (en) * 2001-05-02 2003-02-27 Hood Packaging Corp Sealable valve bag and manufacturing method therefor
WO2005044542A1 (en) * 2003-11-05 2005-05-19 Daniel Suhm Method and device for print embossing surfaces
DE102004013049B4 (en) * 2004-03-10 2008-11-06 Herrmann Ultraschalltechnik Gmbh & Co. Kg Ultrasonic welding device
WO2006087224A1 (en) * 2005-02-18 2006-08-24 Jentschmann Ag Zürich Ultrasonic welding device for forming welded seams on textiles
WO2010115662A1 (en) * 2009-04-09 2010-10-14 Robert Bosch Gmbh Device for processing a packing material using ultrasound
WO2010115660A1 (en) * 2009-04-09 2010-10-14 Robert Bosch Gmbh Device for processing a packing material using ultrasound
US8783324B2 (en) 2009-04-09 2014-07-22 Robert Bosch Gmbh Device for processing a packing material using ultrasound

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