DE102009042983A1 - ultrasonic sonotrode - Google Patents

ultrasonic sonotrode Download PDF

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Publication number
DE102009042983A1
DE102009042983A1 DE102009042983A DE102009042983A DE102009042983A1 DE 102009042983 A1 DE102009042983 A1 DE 102009042983A1 DE 102009042983 A DE102009042983 A DE 102009042983A DE 102009042983 A DE102009042983 A DE 102009042983A DE 102009042983 A1 DE102009042983 A1 DE 102009042983A1
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DE
Germany
Prior art keywords
counter
structuring
ultrasonic sonotrode
spout
sonotrode
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Granted
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DE102009042983A
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German (de)
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DE102009042983B4 (en
Inventor
Benjamin Göttert
Werner Graß
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Harro Hofliger Verpackungsmaschinen GmbH
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Widmann Maschinen eK
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B50/00—Making rigid or semi-rigid containers, e.g. boxes or cartons
    • B31B50/74—Auxiliary operations
    • B31B50/81—Forming or attaching accessories, e.g. opening devices, closures or tear strings
    • B31B50/84—Forming or attaching means for filling or dispensing contents, e.g. valves or spouts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
    • B23K20/10—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating making use of vibrations, e.g. ultrasonic welding
    • B23K20/106—Features related to sonotrodes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • 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
    • 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
    • B29C66/302—Particular design of joint configurations the area to be joined comprising melt initiators
    • B29C66/3022—Particular design of joint configurations the area to be joined comprising melt initiators said melt initiators being integral with at least one of the parts to be joined
    • B29C66/30223—Particular design of joint configurations the area to be joined comprising melt initiators said melt initiators being integral with at least one of the parts to be joined said melt initiators being rib-like
    • 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
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
    • B29C66/53—Joining single elements to tubular articles, hollow articles or bars
    • B29C66/532—Joining single elements to the wall of tubular articles, hollow articles or bars
    • B29C66/5326—Joining single elements to the wall of tubular articles, hollow articles or bars said single elements being substantially flat
    • B29C66/53261—Enclosing tubular articles between substantially flat elements
    • B29C66/53262—Enclosing spouts between the walls of bags, e.g. of medical bags
    • B29C66/53263—Enclosing spouts between the walls of bags, e.g. of medical bags said spouts comprising wings, e.g. said spouts being of ship-like or canoe-like form to avoid leaks in the corners
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/814—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/8141—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined
    • B29C66/81431—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined comprising a single cavity, e.g. a groove
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • 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
    • B29C66/83—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
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B61/00—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages
    • B65B61/18—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages for making package-opening or unpacking elements
    • B65B61/186—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages for making package-opening or unpacking elements by applying or incorporating rigid fittings, e.g. discharge spouts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D75/00—Packages comprising articles or materials partially or wholly enclosed in strips, sheets, blanks, tubes, or webs of flexible sheet material, e.g. in folded wrappers
    • B65D75/52—Details
    • B65D75/58—Opening or contents-removing devices added or incorporated during package manufacture
    • B65D75/5861—Spouts
    • B65D75/5872—Non-integral spouts
    • B65D75/5883—Non-integral spouts connected to the package at the sealed junction of two package walls
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61J—CONTAINERS SPECIALLY ADAPTED FOR MEDICAL OR PHARMACEUTICAL PURPOSES; DEVICES OR METHODS SPECIALLY ADAPTED FOR BRINGING PHARMACEUTICAL PRODUCTS INTO PARTICULAR PHYSICAL OR ADMINISTERING FORMS; DEVICES FOR ADMINISTERING FOOD OR MEDICINES ORALLY; BABY COMFORTERS; DEVICES FOR RECEIVING SPITTLE
    • A61J1/00—Containers specially adapted for medical or pharmaceutical purposes
    • A61J1/05—Containers specially adapted for medical or pharmaceutical purposes for collecting, storing or administering blood, plasma or medical fluids ; Infusion or perfusion containers
    • A61J1/10—Bag-type containers
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61J—CONTAINERS SPECIALLY ADAPTED FOR MEDICAL OR PHARMACEUTICAL PURPOSES; DEVICES OR METHODS SPECIALLY ADAPTED FOR BRINGING PHARMACEUTICAL PRODUCTS INTO PARTICULAR PHYSICAL OR ADMINISTERING FORMS; DEVICES FOR ADMINISTERING FOOD OR MEDICINES ORALLY; BABY COMFORTERS; DEVICES FOR RECEIVING SPITTLE
    • A61J1/00—Containers specially adapted for medical or pharmaceutical purposes
    • A61J1/14—Details; Accessories therefor
    • A61J1/1475—Inlet or outlet ports
    • 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
    • B29C66/81423—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 concave
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/814—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/8141—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined
    • B29C66/81411—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined characterised by its cross-section, e.g. transversal or longitudinal, being non-flat
    • B29C66/81425—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined characterised by its cross-section, e.g. transversal or longitudinal, being non-flat being stepped, e.g. comprising a shoulder
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/712—Containers; Packaging elements or accessories, Packages
    • B29L2031/7128—Bags, sacks, sachets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/712—Containers; Packaging elements or accessories, Packages
    • B29L2031/7148—Blood bags, medical bags
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B70/00—Making flexible containers, e.g. envelopes or bags
    • B31B70/74—Auxiliary operations
    • B31B70/81—Forming or attaching accessories, e.g. opening devices, closures or tear strings
    • B31B70/84—Forming or attaching means for filling or dispensing contents, e.g. valves or spouts
    • B31B70/844—Applying rigid valves, spouts, or filling tubes
    • 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

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

Abstract

Die Erfindung betrifft eine Ultraschallsonotrode oder Gegenwerkzeug für eine Ultraschallsonotrode zum Einschweißen eines Spouts in einen flexiblen Beutel für Getränke, Lebensmittel, Tierfutter und dergleichen, wobei die Ultraschallsonotrode und/oder das Gegenwerkzeug eine an die Form des Spouts angepasste Schweißfläche mit einer Strukturierung aufweist.The invention relates to an ultrasound sonotrode or counter tool for an ultrasound sonotrode for welding a spout into a flexible bag for beverages, food, animal feed and the like, the ultrasound sonotrode and / or the counter tool having a welding surface with a structure that is adapted to the shape of the spout.

Description

Die Erfindung betrifft eine Ultraschallsonotrode oder ein Gegenwerkzeug für eine Ultraschallsonotrode zum Einschweißen eines Spouts in einen flexiblen Beutel für Getränke, Lebensmittel, Tierfutter und dergleichen. Die Erfindung betrifft auch einen mit einer derartigen Ultraschallsonotrode oder einem derartigen Gegenwerkzeug hergestellten Beutel.The invention relates to an ultrasonic sonotrode or a counter tool for an ultrasonic sonotrode for welding a spout into a flexible bag for drinks, food, animal feed and the like. The invention also relates to a bag made with such an ultrasonic sonotrode or such a counter tool.

Beutel als Aufbewahrungs- und Transportbehälter für Getränke und andere fluide Medien sind hinreichend bekannt und erfreuen sich in jüngster Zeit immer größerer Beliebtheit, da sie im entleerten Zustand weniger Platz benötigen, als Dosen, Flaschen oder andere starre Behältnisse. Es besteht aber der Wunsch, diese flexiblen Beutel mit einem Verschluss zu versehen, der wieder verschließbar ist. Hierfür wird zwischen die freien Kanten des Beutels (pouch) ein Verschluss (spout) eingeschweißt, welcher einen Fuß mit einem im Wesentlichen elliptischen Querschnitt aufweist. Das Einschweißen eines derartigen Verschlusses erfolgt in der Regel über drei aufeinander folgende Schritte, wofür mehrere, jeweils enger werdende Werkzeuge verwendet werden. Als problematisch hat sich der Bereich herausgestellt, in welchem die beiden Kanten des Beutels aufgrund der Aufnahme des Verschlusses einen Höhensprung aufweisen. Die Verschweißung bewirkt eine Plastifizierung der Kanten sowie des Verschlusses, so dass mit enger werdenden Werkzeugen nachgedrückt werden muss. Dies ist jedoch nicht sehr genau durchführbar, weshalb es des Öfteren an diesen Stellen zu Leckagen kommt. Problematisch sind nicht nur die Toleranzen der einzelnen Bauteile, sondern auch die Toleranzen der Schweißmaschine sowie die Schweißbewegung selbst. Da der Verschluss nicht nur bei leeren Beuteln, sondern auch bei bereits abgefüllten Beuteln, das heißt, inline in der Abfüllmaschine eingeschweißt werden muss, besteht ein hohes Bedürfnis dafür, dass eine dichte Schweißung erzielt wird.Pouches as storage and transport containers for beverages and other fluid media are well known and have become increasingly popular in recent times, as they require less space when emptied than cans, bottles or other rigid containers. However, there is a desire to provide these flexible bags with a closure that can be closed again. For this purpose, a closure (spout) is welded between the free edges of the bag (pouch), which has a foot with a substantially elliptical cross-section. The welding of such a closure is usually carried out over three consecutive steps, for which several, respectively narrowing tools are used. The area has proved to be problematic in which the two edges of the bag have a height jump due to the inclusion of the closure. The welding causes a plastification of the edges and the closure, so that must be pressed with narrowing tools. However, this is not very accurate feasible, which is why it often comes at these points to leaks. The problem is not only the tolerances of the individual components, but also the tolerances of the welding machine and the welding movement itself. Since the closure not only in empty bags, but also in already filled bags, that is, must be welded inline in the filling machine, there is a high demand that a tight weld is achieved.

Aus der EP 1 245 500 A1 ist zum Beispiel ein Beutel bekannt, in welchen ein derartiger Verschluss eingeschweißt worden ist. Am Verschluss sind deutlich die sehr flach auslaufenden oder flügelartigen Enden des Verschlusses erkennbar, mit welchen der Höhensprung der aneinander anliegenden Kanten des Beutels so gering wie möglich gehalten werden soll.From the EP 1 245 500 A1 For example, a bag is known in which such a closure has been welded. Clearly visible on the closure are the very flat or wing-like ends of the closure with which the height jump of the abutting edges of the bag should be kept as low as possible.

Der Erfindung liegt die Aufgabe zugrunde, einen Beutel und/oder ein Verfahren zur Herstellung eines derartigen Beutels bereitzustellen, welcher einen Verschluss aufweist, der eine größere Sicherheit hinsichtlich der Dichtigkeit bietet und der einfacher herstellbar ist.The invention has for its object to provide a bag and / or a method for producing such a bag, which has a closure, which offers greater security in terms of tightness and is easier to produce.

Diese Aufgabe wird bei einem flexiblen Beutel für Getränke, Lebensmittel, Tierfutter und dergleichen dadurch gelöst, dass die Ultraschallsonotrode eine an die Form des Spouts angepasste Schweißfläche mit einer Strukturierung aufweist.This object is achieved in the case of a flexible bag for drinks, foods, animal feed and the like in that the ultrasonic sonotrode has a welding surface with a structuring adapted to the shape of the spout.

Üblicherweise weist der Spout Energierichtungsgeber auf. Die Schweißfläche der Sonotrode ist an die Form des in den Pouch einzuschweißenden Fuß des Spouts angepasst und ist mit einer Strukturierung versehen. Diese Strukturierung wird von einer Vielzahl von Erhebungen gebildet. Außerdem weist der Spout einen im wesentlichen rautenförmigen Querschnitt auf und ist zylinderförmig ausgestaltet. Die Energierichtungsgeber sind stegartig ausgebildet und laufen um die Längesachse des Spouts um. Die Strukturierung der Sonotrode ist höckerarig oder stegartig ausgebildet, wobei die Stege nach Art einer Treppe in Achsrichtung oder Durchflussrichtung des Spouts verlaufen.Usually the Spout has energy directors. The welding surface of the sonotrode is adapted to the shape of the foot of the spout to be welded into the pouch and is provided with a structuring. This structuring is formed by a large number of surveys. In addition, the spout has a substantially diamond-shaped cross-section and is cylindrical. The energy directors are web-like and run around the longitudinal axis of the spout. The structuring of the sonotrode is tucked or web-like, the webs running in the manner of a staircase in the axial direction or flow direction of the spout.

Dabei weist die Strukturierung bogenförmige Abschnitte und gerade Abschnitte auf. Hierdurch wird eine optimale Materialverdrängung erzielt, ohne dass der Beutel verletzt wird. Dies wird dadurch unterstützt, dass die bogenförmigen Abschnitte und geraden Abschnitte an ihrem Übergang fluchten, d. h. stetig ineinander übergehen. Scharfe Kanten werden auf diese Weise vermieden.In this case, the structuring has arcuate sections and straight sections. As a result, an optimal material displacement is achieved without the bag is injured. This is assisted by aligning the arcuate sections and straight sections at their junction, i. H. constantly merge into each other. Sharp edges are avoided in this way.

Insbesondere schließen die bogenförmigen Abschnitte und geraden Abschnitte an ihrem Übergang einen von 180° abweichenden Winkel zueinander ein, d. h. sie gehen zumindest an den dem Spout zugewandten Kanten nicht stetig ineinander über.In particular, the arcuate sections and straight sections at their transition include an angle deviating from 180 ° to each other, i. H. they do not merge into each other at least at the edges facing the spout.

Mit Vorzug verläuft die Strukturierung im wesentlichen orthogonal zur Achsrichtung oder Durchflussrichtung des Spouts.With preference, the structuring proceeds substantially orthogonal to the axial direction or flow direction of the spout.

Gemäß einem bevorzugten Ausführungsbeispiel weist die Strukturierung eine Höhe von 10 bis 100 μm, insbesondere von 50 μm auf.According to a preferred embodiment, the structuring has a height of 10 to 100 .mu.m, in particular of 50 .mu.m.

Um optimale Schweißergebnisse erzielen zu können weist die Strukturierung Wände auf, die parallel zur Zustellrichtung auf den Spout verlaufen, oder weist die Strukturierung pyramidenstumpfförmige Noppen auf.In order to achieve optimum welding results, the structuring has walls that run parallel to the feed direction on the spout, or has the structuring truncated pyramidal nubs.

Weitere Vorteile, Merkmale und Einzelheiten der Erfindung ergeben sich aus den Unteransprüchen sowie der nachfolgenden Beschreibung, in der unter Bezugnahme auf die Zeichnung zwei besonders bevorzugte Ausführungsbeispiele im Einzelnen beschrieben sind. Dabei können die in der Zeichnung dargestellten sowie in der Beschreibung und in den Ansprüchen erwähnten Merkmale jeweils einzeln für sich oder in beliebiger Kombination erfindungswesentlich sein.Further advantages, features and details of the invention will become apparent from the subclaims and the following description in which two particularly preferred embodiments are described in detail with reference to the drawing. The features shown in the drawing and mentioned in the description and in the claims may each be essential to the invention individually or in any combination.

In der Zeichnung zeigen: In the drawing show:

1 eine perspektivische Ansicht eines Spouts; 1 a perspective view of a spout;

2 eine Seitenansicht des Spouts gemäß 2 mit angedeutetem Beutel; 2 a side view of the spout according to 2 with indicated bag;

3 Eine Ansicht in Richtung des Pfeils III gemäß 2; 3 A view in the direction of arrow III according to 2 ;

4 eine perspektivische Ansicht einer Ultraschallsonotrode oder eines Gegenwerkzeugs; 4 a perspective view of an ultrasonic sonotrode or a counter tool;

5 eine Seitenansicht der Ultraschallsonotrode oder des Gegenwerkzeugs gemäß 4; und 5 a side view of the ultrasonic sonotrode or the counter tool according to 4 ; and

6 eine stark vergrößerte Wiedergabe eines zweiten Ausführungsbeispiels einer Strukturierung an der Sonotrode oder am Gegenwerkzeug. 6 a greatly enlarged representation of a second embodiment of structuring on the sonotrode or on the counter tool.

Die 1 bis 3 zeigen einen Spout 10, der mit seinem Fuß 12 in einen Beutel 14 oder Pouch mittels Ultraschall eingeschweißt wird. Der Spout 10 besitzt noch ein Mundstück 16, welches mittels einer geeigneten Kappe oder dergleichen verschließbar ist. Der Fuß 12 ist mit Energierichtungsgebern 18 in Form von umlaufenden Stegen mit einer Höhe von z. B. 0,5 mm versehen. In 2 ist noch der den Fuß 12 aufnehmende Seitenrand 20 des Beutels 14 erkennbar, welcher zum Verschließen des Beutels 14 ebenfalls verschweißt wird.The 1 to 3 show a spout 10 who with his foot 12 in a bag 14 or pouch is welded by means of ultrasound. The spout 10 still has a mouthpiece 16 which is closable by means of a suitable cap or the like. The foot 12 is with energy directors 18 in the form of circumferential webs with a height of z. B. 0.5 mm provided. In 2 is still the foot 12 receiving margin 20 of the bag 14 recognizable, which for closing the bag 14 also welded.

Die 4 zeigt in perspektivischer Ansicht eine Ultraschallsonotrode 22 oder ein Gegenwerkzeug 24, welche oder welches ein Teil des Schweißwerkzeugs darstellt. Die Ultraschallsonotrode 22 wird in Richtung des Pfeils 26 in Schwingung versetzt, wobei die Schweißfläche 28 am Beutel 14 anliegt. Die Ultraschallsonotrode 22 oder das Gegenwerkzeug 24 weist in der Schweißfläche 28 eine Kavität 30 auf, welche sich um die eine Seite des Spouts 10 schmiegt. An der anderen Seite liegt die gleiche Kavität an.The 4 shows in perspective view an ultrasonic sonotrode 22 or a counter tool 24 which represents a part of the welding tool. The ultrasound sonotrode 22 will be in the direction of the arrow 26 vibrated, with the welding surface 28 on the bag 14 is applied. The ultrasound sonotrode 22 or the counter tool 24 points in the welding area 28 a cavity 30 on which is around the one side of the spout 10 nestles. On the other side is the same cavity.

Die Schweißfläche 28 ist mit einer Strukturierung 32 versehen, die von Noppen 34 gebildet wird. Diese Noppen 34 sind kegelstumpfförmig ausgestaltet oder weisen Wände auf, die parallel zur Richtung des Pfeils 26 ausgerichtet sind, so dass die Noppen ohne Zerstörung des Beutels 14 in Richtung des Pfeils 26 in den Beutel 14 und in den Spout 10 eindringen können und das Schweißwerkzeug nach dem Schweißvorgang wieder vom Beutel 14 entfernt werden kann. Die Höhe der Noppen 34 beträgt vorzugsweise 50 μm und die Kantenabmessung z. B. 0,5 mm.The welding surface 28 is with a structuring 32 provided by pimples 34 is formed. These pimples 34 are frusto-conical or have walls that are parallel to the direction of the arrow 26 are aligned so that the pimples without destroying the bag 14 in the direction of the arrow 26 in the bag 14 and in the spout 10 can penetrate and the welding tool after the welding process again from the bag 14 can be removed. The height of the pimples 34 is preferably 50 microns and the edge dimension z. B. 0.5 mm.

Die 6 ist in stark vergrößerter Wiedergabe ein Ausschnitt der Ultraschallsonotrode 22 oder des Gegenwerkzeugs 24 dargestellt, und der Fuß 12 des Spouts 10 angedeutet. Die Strukturierung 32 ist in diesem Ausführungsbeispiel treppenartig ausgebildet, wobei eine Flanke 36 mit einer Länge 38 von ca. 50 μm orthogonal zur Richtung des Pfeils 26 (Arbeitsrichtung der Ultraschallsonotrode 22 oder des Gegenwerkzeugs 24) und eine Flanke 40 mit einer Höhe 42 von ca. 30 μm parallel zur Richtung des Pfeils 26 ausgerichtet sind. Der gegenüber dem Fuß 12 distale Übergang von der Flanke 26 zur Flanke 40 ist gerundet ausgebildet und der gegenüber dem Fuß 12 proximale Übergang von der Flanke 40 zur Flanke 36 ist mit einer Kante 44 ausgebildet. Die Kante 44 bildet einen optimalen Energierichtungsgeber für die Ultraschallwellen.The 6 is a section of the ultrasonic sonotrode in greatly enlarged reproduction 22 or the counter tool 24 represented, and the foot 12 of the spout 10 indicated. The structuring 32 is formed like a staircase in this embodiment, with a flank 36 with a length 38 of about 50 microns orthogonal to the direction of the arrow 26 (Working direction of the ultrasonic sonotrode 22 or the counter tool 24 ) and a flank 40 with a height 42 of approx. 30 μm parallel to the direction of the arrow 26 are aligned. The opposite the foot 12 distal transition from the flank 26 to the flank 40 is rounded and the opposite of the foot 12 proximal transition from the flank 40 to the flank 36 is with an edge 44 educated. The edge 44 forms an optimal energy director for the ultrasonic waves.

ZITATE ENTHALTEN IN DER BESCHREIBUNG QUOTES INCLUDE IN THE DESCRIPTION

Diese Liste der vom Anmelder aufgeführten Dokumente wurde automatisiert erzeugt und ist ausschließlich zur besseren Information des Lesers aufgenommen. Die Liste ist nicht Bestandteil der deutschen Patent- bzw. Gebrauchsmusteranmeldung. Das DPMA übernimmt keinerlei Haftung für etwaige Fehler oder Auslassungen.This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Zitierte PatentliteraturCited patent literature

  • EP 1245500 A1 [0003] EP 1245500 A1 [0003]

Claims (10)

Ultraschallsonotrode (22) oder Gegenwerkzeug für eine Ultraschallsonotrode (22) zum Einschweißen eines Spouts (10) in einen flexiblen Beutel (14) für Getränke, Lebensmittel, Tierfutter und dergleichen, dadurch gekennzeichnet, dass die Ultraschallsonotrode (22) und/oder das Gegenwerkzeug eine an die Form des Spouts (10) angepasste Schweißfläche (28) mit einer Strukturierung (32) aufweist.Ultrasonic sonotrode ( 22 ) or counter tool for an ultrasonic sonotrode ( 22 ) for welding in a spout ( 10 ) in a flexible bag ( 14 ) for beverages, food, animal feed and the like, characterized in that the ultrasonic sonotrode ( 22 ) and / or the counter tool to the shape of the spout ( 10 ) adapted welding surface ( 28 ) with a structuring ( 32 ) having. Ultraschallsonotrode oder Gegenwerkzeug nach Anspruch 1, dadurch gekennzeichnet, dass die Strukturierung (32) treppenartig ist.Ultrasonic sonotrode or counter-tool according to claim 1, characterized in that the structuring ( 32 ) is staircase-like. Ultraschallsonotrode oder Gegenwerkzeug nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Strukturierung (32) bogenförmige Abschnitte und gerade Abschnitte aufweist.Ultrasonic sonotrode or counter-tool according to claim 1 or 2, characterized in that the structuring ( 32 ) has arcuate portions and straight portions. Ultraschallsonotrode oder Gegenwerkzeug nach Anspruch 3, dadurch gekennzeichnet, dass die bogenförmigen Abschnitte und geraden Abschnitte an ihrem Übergang fluchten, d. h. stetig ineinander übergehen.Ultrasound sonotrode or counter-tool according to claim 3, characterized in that the arcuate portions and straight portions are aligned at their junction, d. H. constantly merge into each other. Ultraschallsonotrode oder Gegenwerkzeug nach Anspruch 3, dadurch gekennzeichnet, dass die bogenförmigen Abschnitte und geraden Abschnitte an ihrem Übergang einen von 180° abweichenden Winkel zueinander einschließen, d. h. nicht stetig ineinander übergehen.Ultrasound sonotrode or counter-tool according to claim 3, characterized in that the arcuate sections and straight sections at their transition include a deviating from 180 ° angle to each other, d. H. do not constantly merge. Ultraschallsonotrode oder Gegenwerkzeug nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Strukturierung (32) im wesentlichen senkrecht zur Achsrichtung (Pfeil 26) oder Durchflussrichtung des Spouts (10) verläuft.Ultrasonic sonotrode or counter-tool according to one of the preceding claims, characterized in that the structuring ( 32 ) substantially perpendicular to the axial direction (arrow 26 ) or flow direction of the spout ( 10 ) runs. Ultraschallsonotrode oder Gegenwerkzeug nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Strukturierung (32) kegel- oder pyramidenstumpfförmige Noppen (34) aufweist.Ultrasonic sonotrode or counter-tool according to one of the preceding claims, characterized in that the structuring ( 32 ) truncated cones or truncated pyramids ( 34 ) having. Ultraschallsonotrode oder Gegenwerkzeug nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Strukturierung (32) eine Höhe von 10 bis 100 μm, insbesondere von 50 μm aufweist.Ultrasonic sonotrode or counter-tool according to one of the preceding claims, characterized in that the structuring ( 32 ) has a height of 10 to 100 microns, in particular of 50 microns. Ultraschallsonotrode oder Gegenwerkzeug nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Strukturierung (32) Wände aufweist, die parallel zur Zustellrichtung (Pfeil 26) auf den Spout (10) verlaufen.Ultrasonic sonotrode or counter-tool according to one of the preceding claims, characterized in that the structuring ( 32 ) Has walls which are parallel to the feed direction (arrow 26 ) on the Spout ( 10 ). Beutel (14), dadurch gekennzeichnet, dass er mit einer derartigen Ultraschallsonotrode (22) oder einem derartigen Gegenwerkzeug hergestellt wurde.Bag ( 14 ), characterized in that it is equipped with such an ultrasonic sonotrode ( 22 ) or such a counter tool was made.
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EP2894022A1 (en) * 2014-01-13 2015-07-15 BRANSON Ultraschall Niederlassung der Emerson Technologies GmbH & Co. OHG Sonotrode, welding device with sonotrode and corresponding welding method
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US5606844A (en) * 1993-12-27 1997-03-04 Sumitomo Bakelite Company, Limited Process for producing a self-supporting package having an outlet stopper and an apparatus for producing said package
EP1241098B1 (en) * 2001-03-12 2004-02-18 Tetra Laval Holdings & Finance SA Ultrasonic transverse sealing device and method for sealing walls of a packaging material filled with a pourable food product
DE10323783A1 (en) * 2003-05-23 2004-12-09 Maschinenfabrik Gerd Mosca Ag Ultrasonic welding device

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EP1245500A1 (en) 2001-03-15 2002-10-02 The Procter & Gamble Company Multiple compartment pouch with multiple dispensing channels

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2894022A1 (en) * 2014-01-13 2015-07-15 BRANSON Ultraschall Niederlassung der Emerson Technologies GmbH & Co. OHG Sonotrode, welding device with sonotrode and corresponding welding method
WO2018058031A1 (en) * 2016-09-26 2018-03-29 Dow Global Technologies Llc Seal bar and process for using same
US10155615B2 (en) 2016-09-26 2018-12-18 Dow Global Technologies Llc Seal bar and process for using same
CN109789643A (en) * 2016-09-26 2019-05-21 陶氏环球技术有限责任公司 Sealing strip and its application method
CN109789643B (en) * 2016-09-26 2021-07-06 陶氏环球技术有限责任公司 Sealing strip and method of use thereof

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