DE102009042983B4 - ultrasonic sonotrode - Google Patents
ultrasonic sonotrode Download PDFInfo
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- DE102009042983B4 DE102009042983B4 DE102009042983A DE102009042983A DE102009042983B4 DE 102009042983 B4 DE102009042983 B4 DE 102009042983B4 DE 102009042983 A DE102009042983 A DE 102009042983A DE 102009042983 A DE102009042983 A DE 102009042983A DE 102009042983 B4 DE102009042983 B4 DE 102009042983B4
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- structuring
- counter
- spout
- ultrasonic sonotrode
- sonotrode
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- 238000003466 welding Methods 0.000 claims abstract description 21
- 235000013361 beverage Nutrition 0.000 claims abstract description 3
- 238000002604 ultrasonography Methods 0.000 claims description 5
- 230000007704 transition Effects 0.000 claims description 4
- 206010000496 acne Diseases 0.000 description 4
- 238000000034 method Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000005022 packaging material Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
Images
Classifications
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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
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- 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
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- 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
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- 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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- 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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- 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
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- 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
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- 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
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- 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
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- 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
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- 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
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- 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
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- 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
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- 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
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- 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
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- 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
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- 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
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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
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- 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
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- 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)
- Making Paper Articles (AREA)
- Lining Or Joining Of Plastics Or The Like (AREA)
Abstract
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, wobei die Strukturierung (32) eine Höhe von 10 μm bis 100 μm, insbesondere von 50 μm aufweist.Ultrasonic sonotrode (22) or counter tool for an ultrasonic sonotrode (22) for welding a spout (10) into a flexible bag (14) for beverages, food, animal feed and the like, characterized in that the ultrasonic sonotrode (22) and / or the counter tool one has a welding surface (28) adapted to the shape of the spout (10) with a structuring (32), the structuring (32) having a height of 10 μm to 100 μm, in particular 50 μm.
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.Bags 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 in the deflated state, as 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
Die
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, wobei die Strukturierung eine Höhe von 10 μm bis 100 μm, insbesondere von 50 μm aufweist.This object is achieved in a flexible bag for drinks, food, animal feed and the like in that the ultrasonic sonotrode has a matched to the shape of the spout welding surface with a structuring, wherein the structuring has a height of 10 .mu.m to 100 .mu.m, in particular of 50 microns having.
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.
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:
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Claims (8)
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EP2894022B1 (en) * | 2014-01-13 | 2020-01-01 | BRANSON Ultraschall Niederlassung der Emerson Technologies GmbH & Co. OHG | Sonotrode, welding device with sonotrode and corresponding welding method |
US10155615B2 (en) * | 2016-09-26 | 2018-12-18 | Dow Global Technologies Llc | Seal bar and process for using same |
Citations (4)
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DE69403767T2 (en) * | 1993-12-27 | 1997-10-09 | Sumitomo Bakelite Co | Method and device for producing a stand-up pouch with a closure |
EP1245500A1 (en) * | 2001-03-15 | 2002-10-02 | The Procter & Gamble Company | Multiple compartment pouch with multiple dispensing channels |
DE10323783A1 (en) * | 2003-05-23 | 2004-12-09 | Maschinenfabrik Gerd Mosca Ag | Ultrasonic welding device |
DE60102069T2 (en) * | 2001-03-12 | 2004-12-30 | Tetra Laval Holdings & Finance S.A. | Method and device for ultrasonically sealing the walls of a packaging material filled with a flowable food |
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Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE69403767T2 (en) * | 1993-12-27 | 1997-10-09 | Sumitomo Bakelite Co | Method and device for producing a stand-up pouch with a closure |
DE60102069T2 (en) * | 2001-03-12 | 2004-12-30 | Tetra Laval Holdings & Finance S.A. | Method and device for ultrasonically sealing the walls of a packaging material filled with a flowable food |
EP1245500A1 (en) * | 2001-03-15 | 2002-10-02 | The Procter & Gamble Company | Multiple compartment pouch with multiple dispensing channels |
DE10323783A1 (en) * | 2003-05-23 | 2004-12-09 | Maschinenfabrik Gerd Mosca Ag | Ultrasonic welding device |
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