FR2507531A1 - Procede et dispositif de soudage de films en matiere plastique par ultrasons - Google Patents

Procede et dispositif de soudage de films en matiere plastique par ultrasons Download PDF

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Publication number
FR2507531A1
FR2507531A1 FR8111603A FR8111603A FR2507531A1 FR 2507531 A1 FR2507531 A1 FR 2507531A1 FR 8111603 A FR8111603 A FR 8111603A FR 8111603 A FR8111603 A FR 8111603A FR 2507531 A1 FR2507531 A1 FR 2507531A1
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France
Prior art keywords
sonotrode
films
anvil
welding
hard
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Pending
Application number
FR8111603A
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English (en)
Inventor
Jean Pierre Scotto
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Mecasonic SA
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Mecasonic SA
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Priority to FR8111603A priority Critical patent/FR2507531A1/fr
Publication of FR2507531A1 publication Critical patent/FR2507531A1/fr
Pending 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
    • 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
    • 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
    • B29C65/081—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using ultrasonic vibrations having a component of vibration not perpendicular to the welding surface
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/08—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using ultrasonic vibrations
    • B29C65/083—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using ultrasonic vibrations using a rotary sonotrode or a rotary anvil
    • B29C65/087—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using ultrasonic vibrations using a rotary sonotrode or a rotary anvil using both a rotary sonotrode and a rotary anvil
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
    • B29C66/112—Single lapped joints
    • B29C66/1122—Single lap to lap joints, i.e. overlap joints
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
    • B29C66/41—Joining substantially flat articles ; Making flat seams in tubular or hollow articles
    • B29C66/43—Joining a relatively small portion of the surface of said articles
    • B29C66/431—Joining the articles to themselves
    • B29C66/4312—Joining the articles to themselves for making flat seams in tubular or hollow articles, e.g. transversal seams
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/73—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
    • B29C66/81463—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the constructional aspects of the pressing elements, e.g. of the welding jaws or clamps comprising a plurality of single pressing elements, e.g. a plurality of sonotrodes, or comprising a plurality of single counter-pressing elements, e.g. a plurality of anvils, said plurality of said single elements being suitable for making a single joint
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/83—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
    • B29C66/832—Reciprocating joining or pressing tools
    • B29C66/8322—Joining or pressing tools reciprocating along one axis
    • 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
    • B29C66/843—Machines for making separate joints at the same time in different planes; Machines for making separate joints at the same time mounted in parallel or in series
    • B29C66/8432—Machines for making separate joints at the same time mounted in parallel or in series
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/84—Specific machine types or machines suitable for specific applications
    • B29C66/849—Packaging machines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/40—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
    • B29C66/433—Casing-in, i.e. enclosing an element between two sheets by an outlined seam
    • 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

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

Abstract

PROCEDE DE SOUDAGE PAR ULTRASONS DE FILMS PLASTIQUES DISPOSES ENTRE UNE ENCLUME ET UNE SONOTRODE VIBRANTE, CARACTERISE EN CE QU'ON APPLIQUE AUX FILMS A SOUDER 2, 3, UNE VIBRATION PARALLELE A CES DERNIERS, LA PRESSION ETANT APPLIQUEE PERPENDICULAIREMENT AU PLAN DES DEUX FILMS.

Description

La présente invention concerne le soudage par ultra-sons de films ou pellicules thermoplastiques. On sait (figure 1) que la technique du soudage par ultra-sons de matériaux thermoplastiques comporte l'application d'une sonotrode 1 vibrant à une fréquence ultrasonique (20 à 40 Mtz), perpendiculairement aux matériaux à assembler.
Dans le cas d'une application au soudage de films plastiques, comme illustré sur la figure I, les deux feuilles à souder 2,3 sont disposées entre une enclume rigide 4 et la sonotrode vibrante 1. Cette dernière est appliquée avec une certaine pression P sur les deux films. L'énergie vibratoire d'amplitude A, transmise par la sonotrode est absorbée par les deux films 2 et 3, pincés entre la sonotrode et l'enclume. Il en résulte un dégagement de chaleur intense qui provoque la fusion des portions superposées des films plastiques et produit ainsi la soudure.
Cette technique connue implique que la sonotrode soit appliquée perpendiculairement aux films à souder. La sonotrode 1 vibre longitudinalement et l'amplitude A est perpendiculaire aux films à souder.
Ce procédé présente l'avantage de la simplicite étant donné qu'il peut etre mis en oeuvre à l'aide de n'importe quelle machine à souder par ultra-sons disponible dans le commerce. Cependant, ce procédé n'est pas applicable au soudage de certaines matières plastiques, notamment aux matières trop dures (telles que 1 polyesters) qui transmettent toute l'énergie mécanique à l'enclume, ainsi qu'aux matières dont la structure d'orientation moléculaire ne se prête pas à ce procédé (il s'agit notamment du polyéthylène utilisé pour l'emballage).
La présente invention se propose d'apporter un procédé pouvant titre utilisé pour le soudage de tous les types de matières plastiques.
Le procédé de soudage par ultra-sons de films plastiques selon 11 invention est caractérisé en ce qu'on applique aux films à souder, une vibration parallèle aux films à souder, la pression étant appliquée perpendiculairement au plan des deux films.
L'invention vise également un dispositif permettant de réaliser la soudure en continu de films thermoplastiques. Ge dispositif est caractérisé en ce. qu'il comporte au moins une sonotrode cylindrique comportant un relief approprié déterminant une largeur de soudure ; une tête à souder entraînée en rotation par un moteur à vitesse contrôlée et recevant ladite sonotrode et une enclume homocynétique disposée en regard de ladite sonotrode, les films à souder, avançant en continu étant pincés entre les deux éléments tournants (sonotrode et enclume).
D'autres caractéristiques et avantages de cette invention ressortiront de la description faite ci-après en référence au dessin annexé qui en illustre des exemples de réalisation dépourvus de tout caractère limitatif. Sur le dessin
- la figure 1 est une vue schématique du dispositif connu
de soudage discuté dans le préambule de la présente description;
- la figure 2 est un schéma illustrant le procédé de soudage
selon la présente invention
- la figure 3 est une vue schématique en perspective d'un dis
positif selon l'invention pour réaliser la soudure en continu
de deux films thermoplastiques
- la figure 4 est une vue partielle illustrant la disposition
relative des deux films à souder entre les éléments tournants;;
- la figure 5 illustre une variante de la sonotrode et,
- les figures 6 et 7 sont des vues en plan montrant des exem
ples de réalisation de relief des éléments tournants.
On se réfère en premier lieu à la figure 2 qui illustre le procédé selon l'invention de soudage de films de matière thermoplastique par l'utilisation de vibrations horizontales.
Sur cette figure on voit en 1' la sonotrode vibrant longitudinalement qui est appliquée parallèlement aux deux films à souder 2' - 3' appuyés sur une enclume 4'. La vibration V est parallèle au plan des deux films 2' - 3'. La pression P est appliquée perpendiculairement au plan des deux feuilles à assembler, la vibration étant parallèle à ce plan. De préférence la partie R de la sonotrode appliquée sur les deux films est munie d' un relief.
Ce procédé de soudage par vibration horizontale apporte notamment les avantages suivants par rapport à la technique antérieure, illustrée par la figure 1, de soudage par vibration verticale
- qualité de la soudure nettement supérieure à celle des sou
dures obtenues par un procédé classique
- réalisation beaucoup plus rapide de la soudure.
On se réfère maintenant à la figure 3 qui représente schématiquement en perspective une installation selon l'invention pour réaliser le soudage en continu de deux films de matière thermoplastique. L'application illustrée à titre d'exemple non limitatif vise la réalisation de pochettes isolantes 16 d'éléments actifs de batteries.
Dans cet exemple de réalisation on utilise des sonotrodes cylindriques 10 - 101 comportant un relief approprié déterminant une largeur de soudure. Chaque sonotrode, du type à disque, est montée sur une tête à ultra-sons 12 - 12' respectivement. Naturellement on peut, sans sortir du cadre de l'invention, utiliser des sonotrodes normales au lieu des sonotrodes à disques. Chaque tête à souder ainsi réalisée (sonotrode 4 tête ultra-sons) est entraînée en rotation par un moteur à vitesse contrôlée. En regard de chaque sonotrode tournante 10, 10' on dispose une enclume rotative homocynétique 14, 14' respectivement, de façon que les deux films à souder 2', 3' passent entre les sonotrodes et les enclumes, comme on peut le voir sur le dessin.
Une pression relative est appliquée entre chaque sonotrode et l'enclume correspondante. Les films à souder se déplaçant en continu selon la flèche F, et étant pincés entre les deux éléments en rotatif (sonotrode - enclume), on réalise une soudure en continu.
La figure 4 montre; à plus grande échelle la disposition relative des films à souder et des éléments tournants (sonotrode 10 et enclume 14) et la façon selon laquelle est réalisée la soudure des films 2', 3'.
Sur les figures 6 et 7 on a donné deux exemples non limitatif de reliefs ménagés sur les sonotrodes et sur les enclumes rota tives.
Les applications du procédé et du dispositif selon cette invention sont multiples notamment dans l'industrie de l'embal- lage, la soudure de films polyester et d'une façon générale de tous les matériaux thermoplastiques qui ne sont pas soudables par la mise en oeuvre du procédé classique de soudage par vibration perpendiculaire aux surfaces à souder.
il demeure bien entendu que cette invention n'est pas limitée aux exemples de mise en oeuvre et d'application décrits ici, mais qu'elle en englobe toutes les variantes. Ainsi la figure 4 représente une électrode cylindrique classique munie d'un relief à son extrémité, pour produire une soudure en continu.

Claims (4)

REV##Ni)ICATIONS
1.- Procédé de soudage par ultra-sons de films plastiques disposés entre une enclume et une sonotrode vibrante, caractérisé en ce qu'on applique aux films à souder (2', 3'), une vibration parallèle à ces derniers, la pression étant appliquée perpendiculairement au plan des deux films.
2.- Dispositif permettant de réaliser la soudure en continu de films thermoplastiques, mettant en oeuvre le procédé selon la revendication 1, caractérisé en ce qu'il comprend : au moins une sonotrode cylindrique (10 - 10') comportant un relief approprié déterminant une largeur de soudure ; un moteur à vitesse contrôlée entraînant en rotation ladite sonotrode et, une enclume homocynétique (14 - 14'), disposée en regard de ladite sonotrode, les films à souder (2', 3') avançant en continu étant pincés entre les deux éléments en rotation (sonotrode et enclume) et une pression relative étant appliquée entre chaque sonotrode et chaque enclume.
3. - Dispositif selon la revendication 2, caractérisé en ce que ladite sonotrode ( 10 - 10') est du type à disque et elle est montée à l'extrémité d'une tête ultra-sons (12 - 12') entratnée en rotation par ledit moteur à vitesse contrôlée.
4.- Dispositif selon la revendication 2, caractérisé en ce que ladite sonotrode est une sonotrode cylindrique classique,
comportant à son extrémité un relief approprié pour produire une
soudure en continu.
FR8111603A 1981-06-12 1981-06-12 Procede et dispositif de soudage de films en matiere plastique par ultrasons Pending FR2507531A1 (fr)

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FR8111603A FR2507531A1 (fr) 1981-06-12 1981-06-12 Procede et dispositif de soudage de films en matiere plastique par ultrasons

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0242480A2 (fr) * 1986-04-18 1987-10-28 Pola Chemical Industries Inc Appareil de soudage par ultrasons avec surfaces de contact
EP0340334A2 (fr) * 1988-05-05 1989-11-08 Drescher Geschäftsdrucke Gmbh Appareil pour la liaison d'éléments en papier comportant deux ou plusieurs couches
DE9102187U1 (de) * 1991-02-25 1991-05-16 KLN Ultraschall GmbH, 64646 Heppenheim Ultraschall-Schweißvorrichtung für Bahnmaterialien aus thermoplastischem Kunststoff
EP0816053A2 (fr) * 1996-07-05 1998-01-07 Star Micronics Co., Ltd. Procédé pour le soudage par ultrasons d'un boítier en matière plastique
WO1998028123A1 (fr) * 1996-12-20 1998-07-02 Kimberly-Clark Worldwide, Inc. Procede et appareil de soudure ultrasonique pleine largeur
WO2000015381A1 (fr) * 1998-09-11 2000-03-23 Minnesota Mining And Manufacturing Company Procede d'assemblage par ultrasons
EP1346818A3 (fr) * 1996-12-20 2007-01-17 Kimberly-Clark Worldwide, Inc. Procédé et appareil pour le soudage par ultrason sur toute la largeur
WO2023019034A1 (fr) * 2021-08-12 2023-02-16 Northrop Grumman Systems Corporation Dispositif de compactage par ultrasons utilisant des pavillons de disque à mouvement alternatif

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FR1348018A (fr) * 1963-01-09 1964-01-04 Kampf Maschf Erwin Machine de bobinage équipée d'un dispositif pour la soudure des extrémités superposées de bandes de matières
GB998124A (en) * 1961-04-17 1965-07-14 Peter Skjode Knudsen A method of cold welding with the use of ultrasonic vibrations, and apparatus to carry the method into effect
US3380150A (en) * 1963-12-09 1968-04-30 Philips Corp Method and device for ultrasonic welding
GB1167549A (en) * 1966-12-09 1969-10-15 Radyne Ltd Improvements relating to Ultrasonic Welding
FR2440241A1 (fr) * 1978-11-06 1980-05-30 Mecasonic Sa Dispositif pour souder par ultra-sons des feuilles metalliques

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GB998124A (en) * 1961-04-17 1965-07-14 Peter Skjode Knudsen A method of cold welding with the use of ultrasonic vibrations, and apparatus to carry the method into effect
FR1348018A (fr) * 1963-01-09 1964-01-04 Kampf Maschf Erwin Machine de bobinage équipée d'un dispositif pour la soudure des extrémités superposées de bandes de matières
US3380150A (en) * 1963-12-09 1968-04-30 Philips Corp Method and device for ultrasonic welding
GB1167549A (en) * 1966-12-09 1969-10-15 Radyne Ltd Improvements relating to Ultrasonic Welding
FR2440241A1 (fr) * 1978-11-06 1980-05-30 Mecasonic Sa Dispositif pour souder par ultra-sons des feuilles metalliques

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Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0242480A2 (fr) * 1986-04-18 1987-10-28 Pola Chemical Industries Inc Appareil de soudage par ultrasons avec surfaces de contact
EP0242480A3 (en) * 1986-04-18 1988-12-07 Pola Chemical Industries Inc Ultrasonic fuse-bonding sealing apparatus with improved contact surfaces
EP0340334A2 (fr) * 1988-05-05 1989-11-08 Drescher Geschäftsdrucke Gmbh Appareil pour la liaison d'éléments en papier comportant deux ou plusieurs couches
EP0340334A3 (fr) * 1988-05-05 1991-03-06 Drescher Geschäftsdrucke Gmbh Appareil pour la liaison d'éléments en papier comportant deux ou plusieurs couches
DE9102187U1 (de) * 1991-02-25 1991-05-16 KLN Ultraschall GmbH, 64646 Heppenheim Ultraschall-Schweißvorrichtung für Bahnmaterialien aus thermoplastischem Kunststoff
EP0816053A3 (fr) * 1996-07-05 1998-03-04 Star Micronics Co., Ltd. Procédé pour le soudage par ultrasons d'un boítier en matière plastique
EP0816053A2 (fr) * 1996-07-05 1998-01-07 Star Micronics Co., Ltd. Procédé pour le soudage par ultrasons d'un boítier en matière plastique
WO1998028123A1 (fr) * 1996-12-20 1998-07-02 Kimberly-Clark Worldwide, Inc. Procede et appareil de soudure ultrasonique pleine largeur
US5817199A (en) * 1996-12-20 1998-10-06 Kimberly-Clark Worldwide, Inc. Methods and apparatus for a full width ultrasonic bonding device
EP1346818A3 (fr) * 1996-12-20 2007-01-17 Kimberly-Clark Worldwide, Inc. Procédé et appareil pour le soudage par ultrason sur toute la largeur
WO2000015381A1 (fr) * 1998-09-11 2000-03-23 Minnesota Mining And Manufacturing Company Procede d'assemblage par ultrasons
US6099670A (en) * 1998-09-11 2000-08-08 3M Innovative Properties Company Ultrasonic bonding method
WO2023019034A1 (fr) * 2021-08-12 2023-02-16 Northrop Grumman Systems Corporation Dispositif de compactage par ultrasons utilisant des pavillons de disque à mouvement alternatif
US20230049677A1 (en) * 2021-08-12 2023-02-16 Northrop Grumman Systems Corporation Ultrasonic compaction device using reciprocating disk horns
US11872761B2 (en) * 2021-08-12 2024-01-16 Northrop Grumman Systems Corporation Ultrasonic compaction device using reciprocating disk horns

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