DE2653753A1 - DEVICE FOR MANUFACTURING A PACKAGING TUBE FROM A PACKAGING STRIP BY WELDING THE EDGE AREAS - Google Patents

DEVICE FOR MANUFACTURING A PACKAGING TUBE FROM A PACKAGING STRIP BY WELDING THE EDGE AREAS

Info

Publication number
DE2653753A1
DE2653753A1 DE19762653753 DE2653753A DE2653753A1 DE 2653753 A1 DE2653753 A1 DE 2653753A1 DE 19762653753 DE19762653753 DE 19762653753 DE 2653753 A DE2653753 A DE 2653753A DE 2653753 A1 DE2653753 A1 DE 2653753A1
Authority
DE
Germany
Prior art keywords
leg
material web
packaging material
induction coil
legs
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
DE19762653753
Other languages
German (de)
Other versions
DE2653753C2 (en
Inventor
Heinz Autenrieth
Wolfgang Diener
Guenther Voegele
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Priority to DE2653753A priority Critical patent/DE2653753C2/en
Priority to SE7712890A priority patent/SE431434B/en
Priority to NL7712787A priority patent/NL7712787A/en
Priority to AT838677A priority patent/AT366976B/en
Priority to FR7735585A priority patent/FR2372026A1/en
Publication of DE2653753A1 publication Critical patent/DE2653753A1/en
Application granted granted Critical
Publication of DE2653753C2 publication Critical patent/DE2653753C2/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
    • B29C65/50—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding using adhesive tape, e.g. thermoplastic tape; using threads or the like
    • B29C65/5092—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding using adhesive tape, e.g. thermoplastic tape; using threads or the like characterised by the tape handling mechanisms, e.g. using vacuum
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C53/00—Shaping by bending, folding, twisting, straightening or flattening; Apparatus therefor
    • B29C53/36—Bending and joining, e.g. for making hollow articles
    • B29C53/38—Bending and joining, e.g. for making hollow articles by bending sheets or strips at right angles to the longitudinal axis of the article being formed and joining the edges
    • B29C53/48—Bending and joining, e.g. for making hollow articles by bending sheets or strips at right angles to the longitudinal axis of the article being formed and joining the edges for articles of indefinite length, i.e. bending a strip progressively
    • B29C53/50—Bending and joining, e.g. for making hollow articles by bending sheets or strips at right angles to the longitudinal axis of the article being formed and joining the edges for articles of indefinite length, i.e. bending a strip progressively using internal forming surfaces, e.g. mandrels
    • 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
    • B29C65/34—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement"
    • B29C65/36—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" heated by induction
    • B29C65/3604—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" heated by induction characterised by the type of elements heated by induction which remain in the joint
    • B29C65/3656—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" heated by induction characterised by the type of elements heated by induction which remain in the joint being a layer of a multilayer part to be joined, e.g. for joining plastic-metal laminates
    • 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
    • B29C65/34—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement"
    • B29C65/36—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" heated by induction
    • B29C65/3672—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" heated by induction characterised by the composition of the elements heated by induction which remain in the joint
    • B29C65/3676—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" heated by induction characterised by the composition of the elements heated by induction which remain in the joint being metallic
    • B29C65/368—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" heated by induction characterised by the composition of the elements heated by induction which remain in the joint being metallic with a polymer coating
    • 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
    • B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
    • B29C65/4805—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding characterised by the type of adhesives
    • B29C65/481—Non-reactive adhesives, e.g. physically hardening adhesives
    • B29C65/4815—Hot melt adhesives, e.g. thermoplastic adhesives
    • 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
    • B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
    • B29C65/50—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding using adhesive tape, e.g. thermoplastic tape; using threads or the like
    • B29C65/5042—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding using adhesive tape, e.g. thermoplastic tape; using threads or the like covering both elements to be joined
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/78—Means for handling the parts to be joined, e.g. for making containers or hollow articles, e.g. means for handling sheets, plates, web-like materials, tubular articles, hollow articles or elements to be joined therewith; Means for discharging the joined articles from the joining apparatus
    • B29C65/7858—Means for handling the parts to be joined, e.g. for making containers or hollow articles, e.g. means for handling sheets, plates, web-like materials, tubular articles, hollow articles or elements to be joined therewith; Means for discharging the joined articles from the joining apparatus characterised by the feeding movement of the parts to be joined
    • B29C65/7888—Means for handling of moving sheets or webs
    • B29C65/7894—Means for handling of moving sheets or webs of continuously moving sheets or webs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
    • B29C66/114—Single butt joints
    • B29C66/1142—Single butt to butt joints
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
    • B29C66/41—Joining substantially flat articles ; Making flat seams in tubular or hollow articles
    • B29C66/43—Joining a relatively small portion of the surface of said articles
    • B29C66/432—Joining a relatively small portion of the surface of said articles for making tubular articles or closed loops, e.g. by joining several sheets ; for making hollow articles or hollow preforms
    • B29C66/4322—Joining a relatively small portion of the surface of said articles for making tubular articles or closed loops, e.g. by joining several sheets ; for making hollow articles or hollow preforms by joining a single sheet to itself
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/40—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
    • B29C66/49—Internally supporting the, e.g. tubular, article during joining
    • 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
    • B29C66/72—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 structure of the material of the parts to be joined
    • B29C66/723—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 structure of the material of the parts to be joined being multi-layered
    • B29C66/7232—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 structure of the material of the parts to be joined being multi-layered comprising a non-plastics layer
    • B29C66/72321—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 structure of the material of the parts to be joined being multi-layered comprising a non-plastics layer consisting of metals or their alloys
    • 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
    • B29C66/816—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the mounting of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/8161—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the mounting of the pressing elements, e.g. of the welding jaws or clamps said pressing elements being supported or backed-up by springs or by resilient material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/83—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
    • 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
    • B65B51/227—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 induction welding

Description

Robert Bosch GmbH tr VM 593Robert Bosch GmbH tr VM 593

Stuttgart °Stuttgart °

Stand der TechnikState of the art

Die Erfindung geht aus von einer Vorrichtung nach der Gattung des Kauptanspruchs- Durch die DT-AS 14 79 342 (Pig. 6-11) ist schon eine Vorrichtung zum kontinuierlichen Herstellen einer Längsverbindung an einem Packstoffschlauch bekannt geworden, bei der der Induktor zwei langgestreckte Windungen hat, zwischen denen die einander überlappenden Kantenbereiche der Packstoffbahn und ein dazwischen gelegter Schweißstreifen aus Kunststoff hindurchgezogen werden. The invention is based on a device according to the preamble of the claim by DT-AS 14 79 342 (Pig. 6-11) is a device for the continuous production of a longitudinal connection on a packaging tube become known in which the inductor has two elongated turns, between which the overlapping turns Edge areas of the packaging material web and a plastic welding strip placed in between are pulled through.

Bei der bekannten Vorrichtung ist vregen der Anordnung einer Windung der Induktionsspule auf der einen Seite und einer zweiten Windung auf der anderen Seite der Schweißnaht das Aufrechterhalten einer genauen Führung der Kantenbereiche der Packstoffbahn und des Verbindungsstreifens schwierig.In the known device is vregen the arrangement of one turn of the induction coil on one side and one second turn on the other side of the weld, maintaining precise guidance of the edge areas the packaging material web and the connecting strip difficult.

Aufgabe der ErfindungObject of the invention

Der Erfindung liegt die Aufgabe zugrunde, eine Längsnahtschweißvorrichtung zum Herstellen eines Verpackungsschlauches zu schaffen, die leicht zugänglich ist und die eine genaue Führung des Verbindungsstreifens bewirkt.The invention is based on the object of a longitudinal seam welding device to create a packaging tube that is easily accessible and which causes a precise guidance of the connecting strip.

- 3 809822/0242 - 3 809822/0242

Robert Bosch GmbH ( VM 593Robert Bosch GmbH ( VM 593

Stuttgart νStuttgart ν

Vorteile der ErfindungAdvantages of the invention

Mit der erfindungsgesäßen Vorrichtung mit den kennzeichnenden Merkmalen des Hauptanspruchs wird der Verbindungsstreifen, der die beiden Kantenbereiche der Packstoffbahn deckt, gleichmäßig und dicht mit den beiden Kantenbereichen ohne hohen Energieaufwand verschweißt. Eine besonders gleichmäßige und auf die mit dem Verbindungsstreifen sich deckenden Kantenbereiche der Packstoffbahn konzentrierte Erwärmung läßt sich in weiterer Ausgestaltung der Erfindung erzielen, wenn die Induktionsspule einen die beiden Kantenbereiche der Packstoffbahn deckenden ersten Schenkel und zwei sich an diesen über eine Gabelung anschließende zweite Schenkel hat, welche neben dem ersten Schenkel mit Abstand zu diesem und zu der Packstoffbahn verlaufen. Durch die beiden Rückführschenkel wird das Magnetfeld um den ersten Schenkel konzentriert, so daß eine gute induktive Ankopplung der metallischen Einlage in den nebeneinanderliegenden Kantenbereichen der Packstoffbahn mit hoher Stromdichte entsteht, dagegen nur eine schwache Ankopplung im Bereich der von der Packstoffebene entfernten Schenkel.With the device according to the invention with the characteristic Characteristics of the main claim is the connecting strip, which the two edge areas of the packaging material web covers, evenly and tightly welded to the two edge areas without a high expenditure of energy. One special evenly and on the one with the connecting strip itself Concentrated heating covering the edge regions of the packaging material web can be used in a further embodiment of the invention achieve when the induction coil has a first leg that covers the two edge regions of the packaging material web and has two second legs adjoining this via a fork, which next to the first leg at a distance run to this and to the packaging material web. Through the two return legs, the magnetic field is around the first Concentrated legs, so that a good inductive coupling of the metallic insert in the adjacent edge areas of the packaging material web with high current density, but only a weak coupling in the area of the Legs removed from the packaging material level.

Durch die in den Unfceransprüchen aufgeführten Maßnahmen sind vorteilhafte Weiterbildungen der angegebenen Vorrichtung möglich. By means of the measures listed in the claims advantageous developments of the specified device are possible.

809822/0242809822/0242

Robert Bosch GmbH V1 VM 593Robert Bosch GmbH V 1 VM 593

StuttgartStuttgart

Zeichnung;Drawing;

Ein Ausführungsbeispiel ist in der Zeichnung dargestellt und in der nachfolgenden Beschreibung näher erläutert.An exemplary embodiment is shown in the drawing and explained in more detail in the description below.

Es zeigen Fig. 1 eine Vorrichtung zum Herstellen eines Verpackungsschlauches vereinfacht in schaubildlicher Darstellung, Fig. 2 einen Teil der Vorrichtung nach Fig. 1 in Seitenansicht in vergrößertem Maßstab und Fig. 3 einen Induktor der Vorrichtung nach Fig. 1 und 2 in schaubildlicher Ansicht.1 shows an apparatus for producing a Packaging tube simplified in a graphical representation, FIG. 2 shows a part of the device according to FIG. 1 in a side view on an enlarged scale, and FIG. 3 shows an inductor the device according to FIGS. 1 and 2 in a perspective view.

Beschreibung der ErfindungDescription of the invention

Eine von einer Vorratsrolle 2 ablaufende Packstoffbahn 1 wird über eine Umlenkrolle 11 geleitet und anschließend zu einem Schlauch 3 uiit rechteckigem Querschnitt geformt, so daß die Randkanten. 4-, 5 der Packstoffbahn in einer Ebene gegenexnanderstoßen. Der Stoß der Bahnrandkanten 4, 5 und der daran angrenzenden Bereiche wird von einem von einer Vorrätsrolle 6 ablaufenden Verbindungs- oder Deckstreifen mit einer Breite von etwa 10 mm auf der Innenseite des Schlauches abgedeckt. Die Packstoffbahn 1 ist beispielsweise ein Mehrschichtmaterial mit einer Trägerschicht aus Karton, einer Dichtschicht aus Aluminiumfolie und einer inneren Schutzschicht aus einem thermoplastischen Kunststoff,A packaging material web 1 running off a supply roll 2 is passed over a deflection roller 11 and then formed into a tube 3 with a rectangular cross-section, so that the marginal edges. 4-, 5 of the packaging material web in one level push against each other. The joint of the web edge edges 4, 5 and the areas adjoining them is from one of one Supply roll 6 running connection or cover strips covered with a width of about 10 mm on the inside of the tube. The packaging material web 1 is for example a multilayer material with a carrier layer made of cardboard, a sealing layer made of aluminum foil and a inner protective layer made of a thermoplastic material,

809822/0242 . - 5 -809822/0242. - 5 -

Robert Bosch GmbH $ VM 593Robert Bosch GmbH $ VM 593

StuttgartStuttgart

beispielsweise Polyäthylen. Der Deckstreifen 7 ist vorzugsweise ebenfalls mehrschichtig; er hat eine Trägerschicht aus Polypropylen und eine Schweißschicht aus Polyäthylen. Zum Fertigstellen einer dichten Längsnaht 8 am Schlauch 3 wird der Deckstreifen 7 mit den inneren Kantenbereichen der Packstoffbahn 1 verschweißt, wobei seine Schweißschicht auf der Schutzschicht der Kantenbereiche der Packstoffbahn 1 aufliegt.for example polyethylene. The cover strip 7 is preferably also multilayered; it has a support layer made of polypropylene and a welding layer made of polyethylene. To complete a tight longitudinal seam 8 on the hose 3, the cover strip 7 is made with the inner edge areas of the packaging material web 1 is welded, with its welding layer on the protective layer of the edge regions of the packaging material web 1 rests.

Zum Erzeugen der zum kontinuierlichen Verschweißen der Schutzschicht der Packstoffbahn 1 in ihren beiden Kantenbereichen und der Schweißschicht des Deckstreifens 7 nötigen Wärme ist den Kantenbereichen der Packstoffbahn 1 ein Backen 11 mit einer Induktionsspule 12 zugeordnet, welche von einem Generator 13 mit einem hochfrequenten Wechselstrom gespeist wird. Die Induktionsspule 12 hat einen geradlinigen ersten Schenkel 14·, der der Breite des Deckstreifens 7 entspricht und der federnd gegen die beiden auf Stoß gelegten Kantenbereiche der kontinuierlich vorgezogenen Packstoffbahn 1 gedruckt wird. An seinem in Vorzugrichtung der Packstoffbahn hinteren Ende gabelt sich der eine Schenkel 14 in zwei Schenkel 15, 16, welche zunächst von dem einen Schenkel 14 in dessen Andrückebene weg und dann schräg nach oben zurücklaufen. Die beiden Schenkel 15, 16 verlaufen dabei in einerTo produce the continuous welding of the protective layer of the packaging material web 1 in its two edge areas and the heat required for the welding layer of the cover strip 7 is the edge areas of the packaging material web 1 baking 11 associated with an induction coil 12, which is fed by a generator 13 with a high-frequency alternating current will. The induction coil 12 has a straight first leg 14 which corresponds to the width of the cover strip 7 and which is resiliently pressed against the two edge regions of the continuously drawn-out packaging material web 1, which are placed in abutment will. At its rear end in the preferred direction of the packaging material web, one leg 14 forks into two Legs 15, 16, which first run away from one leg 14 in its pressure plane and then back up at an angle. The two legs 15, 16 run in one

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ch GmbH Q . VM 59ch GmbH Q. VM 59

Stuttgart JStuttgart J.

Robert Bosch GmbH Q . VM 595Robert Bosch GmbH Q. VM 595

Ebene, welche zur Andrückebene bzw. der gemeinsamen Ebene des einen Schweißschenkeis 14 und der ebenen Oberseite der Bahnrandbereiche geneigt ist und diese im Bereich der Gabelung 17 der Schenkel 14-, 15 und 16 schneidet. Ferner liegen die beiden Schenkel 15, 16 in zwei parallelen Ebenen, welche parallel zu der Ebene sind, die senkrecht auf der Andrückebene des einen Schenkels 14 steht und den Stoß der Randkanten 4, 5 der Packstoffbahn 1 einbezieht. Vorzugsweise besteht der eine Schenkel 14 aus zwei nebeneinanderliegenden, einander berührenden Leitern 18, 19, welche an ihrem oberen Eingangsende durch eine Lasche 20 miteinander verbunden sind. Im Bereich der Gabelung 17 sind die beiden Leiter 18, 19 auseinanderstrebende gebogen und gehen in die beiden Schenkel 15j 16 über, deren obere Enden ebenfalls durch eine Lasche miteinander verbunden sind. Die Leiter 18, 19 sind Hohlprofile, so daß durch sie ein flüssiges Kühlmittel geleitet werden kann, welches über eine Leitung 22 zu- und über eine zweite Leitung 25 abfließt. Die Leiter 18, 19 sind in Nuten des Backens 11 befestigt, der aus einem elektrisch isolierendem Material besteht und federnd gegen die Kantenbereiche der Packstoffbahn gedruckt wird.Plane, which to the pressure plane or the common plane of a welding leg 14 and the flat top of the Is inclined web edge areas and this intersects in the area of the fork 17 of the legs 14, 15 and 16. Further lie the two legs 15, 16 in two parallel planes which are parallel to the plane which is perpendicular to the pressure plane of one leg 14 is and the joint of the marginal edges 4, 5 of the packaging material web 1 includes. Preferably one leg 14 consists of two adjacent, conductors 18, 19 in contact with one another, which are connected to one another at their upper input end by a tab 20. In the area of the fork 17, the two conductors 18, 19 diverging are bent and go into the two legs 15j 16 over, the upper ends also through a tab are connected to each other. The conductors 18, 19 are hollow profiles so that a liquid coolant is passed through them which flows in via a line 22 and out via a second line 25. The conductors 18, 19 are in grooves of the jaw 11, which consists of an electrically insulating material and resiliently against the edge regions of the Packaging web is printed.

Zum Zuführen und Andrücken des Deckstreifens 7 gegen die Innenseite der Kantenbereiche der Packstoffbahn im BereichFor feeding and pressing the cover strip 7 against the Inside of the edge areas of the packaging material web in the area

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Robert Bosch GmbH ^Q VM 593Robert Bosch GmbH ^ Q VM 593

StuttgartStuttgart

der Induktorschleife 12 sind im Innern des Schlauches 3 mehrere Führungs- und Andrückrollen 25 aus nicht magnetisierbarem, elektrisch nicht leitendem Werkstoff in Porm einer Rollenbahn drehbar auf einem Schienenpaar 2? angeordnet. the inductor loop 12 are inside the hose 3 several guide and pressure rollers 25 made of non-magnetizable, electrically non-conductive material in the form of a roller conveyor rotatable on a pair of rails 2? arranged.

Beim Vorbeiziehen der Kantenbereiche der Packstoffbahn 1 an dem breiten Schenkel 14- der Induktionsspule 12 werden durch das konzentrierte, den Schenkel 14 umgebende magnetische Wechselfeld in der Aluminiumfolienschicht des Packstoffs, und zwar im Bereich der vom Schenkel 14- bedeckten Kantenbereiche, Wirbelströme hoher Dichte erzeugt, welche die Metallfolienschicht stark erwärmen. Diese Wärme wird teilweise auch auf die anliegenden Schutzschichtbereiche und über diese auch auf den Deckstreifen 7 übertragen, so daß die Schutzschicht und die Schweißschicht teigig werden und sich unter dem Druck, insbesondere der in Vorzugrichtung hinteren Rollen 25 miteinander verbinden, die mit einer gegen diese angedrückte Gegenrolle 26 zusammenwirkt. Nach Abkühlen ist die Schweißnaht fest, so daß der Verpackungsschlauch 3 gefüllt und zu Packungen 9 umgeformt werden kann.When the edge areas of the packaging material web 1 are pulled past the wide leg 14 of the induction coil 12 due to the concentrated alternating magnetic field surrounding the leg 14 in the aluminum foil layer of the Packaging material, namely in the area of the edge areas covered by the leg 14, generates high-density eddy currents, which heat the metal foil layer strongly. This heat is partly also on the adjacent protective layer areas and transferred via this to the cover strip 7, so that the protective layer and the welding layer become doughy and bond with one another under the pressure, in particular of the rear rollers 25 in the preferred direction, which cooperates with a counter roller 26 pressed against it. After cooling, the weld seam is firm, so that the Packaging tube 3 can be filled and formed into packs 9.

Ergänzend wird bemerkt, daß zum Verschweißen des Deckstreifens 7 mit den Kantenbereichen der Packstoffbahn 1It is also noted that for welding the cover strip 7 with the edge areas of the packaging material web 1

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Robert Bosch GmbH AA ™ 593Robert Bosch GmbH AA ™ 593

Stuttgart Λ1X Stuttgart Λ 1 X

auch Induktionsspulen mit anderer geometrischer Ausbildung Verwendung finden können. So ist es z.B. denkbar, daß die Rückführschenkel in paralleler Ebene zur Ebene der Kantenbereiche der Packstoffbahn mit Abstand zu dieser verlaufen können, oder daß die Induktionsspule zwei parallele Windungen hat, von denen je ein gleichartiger Leiterteil parallel zum anderen je einen Kantenstreifen der Packstoffbahn berührend verläuft und die anderen Leiterteile in größerem Abstand zu diesen Kantenbereichen sich erstrecken.induction coils with a different geometric design can also be used. For example, it is conceivable that the Return legs run in a plane parallel to the plane of the edge regions of the packaging material web at a distance from this can, or that the induction coil has two parallel turns, each of which has a similar conductor part parallel to the other in each case touching an edge strip of the packaging material web and the other conductor parts in greater distance to these edge areas extend.

Ansprüche: 809822/0242 o Claims: 809822/0242 o

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Claims (7)

Robert Bosch GmbH VM 593Robert Bosch GmbH VM 593 StuttgartStuttgart AnsprücheExpectations Λ. ) Vorrichtung zum kontinuierlichen Herstellen eines Verpackungsschlauches aus einer mehrschichtigen, eine Einlage aus Metall und wenigstens eine Außenschicht aus thermoplastischem Kunststoff aufweisenden Packstoffbahn durch Verschweißen deren Kantenbereiche mit einem schweißbaren Streifen aus Kunststoff mittels einer mit hochfrequentem Wechselstrom gespeisten, langgestreckten Induktionsspule, in deren Wirkbereich die beiden Kantenbereiche der Bahn beim kontinuierlichen Durchführen erwärmt und danach verpreßt werden, dadurch gekennzeichnet, daß die Induktionsspule (12) die beiden auf Stoß gelegten Kantenbereiche der Packstoffbahn (1) berührend auf einer Seite derselben und auf der anderen Seite derselben eine Führungs- und Andrückeinrichtung (25, 26) für den Streifen (7) angeordnet sind. Λ. ) Device for the continuous production of a packaging tube from a multilayered packaging material web with an insert made of metal and at least one outer layer made of thermoplastic material by welding its edge areas with a weldable strip made of plastic by means of an elongated induction coil fed with high-frequency alternating current, in the active area of which the two edge areas the web are heated during continuous passage and then pressed, characterized in that the induction coil (12) touching the two butted edge regions of the packaging material web (1) on one side of the same and on the other side of the same a guiding and pressing device (25, 26) for the strip (7) are arranged. 2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Induktionsspule (12) einen die beiden Kantenbereiche der Packstoffbahn (1) deckenden ersten Schenkel (14-) und zwei sich an diesen über eine Gabelung (17) anschließende zweite Schenkel (15» 16) hat, welche neben dem ersten Schenkel mit Absband zu diesem und zu der Packstoffbahn verlaufen.2. Apparatus according to claim 1, characterized in that the induction coil (12) one of the two edge regions the first leg (14-) covering the packaging material web (1) and two adjacent to this via a fork (17) second leg (15 »16), which next to the first leg with tape to this and to the packaging material web get lost. - 10 -- 10 - 803822/0242803822/0242 - te -- te - Robert Bosch GmbH *5, VM 593Robert Bosch GmbH * 5, VM 593 Stuttgart ^Stuttgart ^ 3. Vorrichtung nach Anspruch 2, dadurch gekennzeichnet, daß sich die zweiten Schenkel (15, 16) in einer gemeinsamen Ebene erstrecken, die zur gemeinsamen Ebene des ersten Schenkels (14-) und der Kantenbereiche der Packstoffbahn (1) geneigt ist.3. Apparatus according to claim 2, characterized in that the second legs (15, 16) are in a common Extend plane to the common plane of the first leg (14-) and the edge regions of the Packing material web (1) is inclined. 4. Vorrichtung nach Anspruch 3, dadurch gekennzeichnet, daß die Ebene der beiden Schenkel (I5i 16) die Ebene des ersten Schenkels (14) in der Gabelung (17) schneidet.4. Apparatus according to claim 3, characterized in that that the plane of the two legs (I5i 16) is the plane of the first leg (14) in the fork (17) intersects. 5- Vorrichtung nach Anspruch 4, dadurch gekennzeichnet, daß die beiden zweiten Schenkel (15» 16) parallel zueinander verlaufen.5- device according to claim 4, characterized in that that the two second legs (15 »16) are parallel run towards each other. 6. Vorrichtung nach einem der Ansprüche 1 - 5> dadurch gekennzeichnet, daß die Induktionsspule (12) aus zwei Leitern (18, 19) zusammengesetzt ist, deren eine Hälften einander berührend nebeneinander als der erste Schenkel (14-) und deren andere Hälften im Abstand voneinander als zweite Schenkel (15? 16) verlaufen. 6. Device according to one of claims 1-5> characterized in that the induction coil (12) is composed of two conductors (18, 19), one of which Halves touching each other next to each other than the first leg (14-) and their other halves at a distance from each other as second legs (15-16). - 11 809822/0242 - 11 809822/0242 Robert Bosch GmbH ^ VM 593Robert Bosch GmbH ^ VM 593 Stuttgart 2Stuttgart 2nd 7. Vorrichtung nach einem der Ansprüche 1-6, dadurch gekennzeichnet, daß die Führungs- und Andrückeinrichtung eine Rollenbahn (25), die den ersten Schenkel (14) · der Induktionsspule sowie die beiden Kantenbereiche der Packstoffbahn und den Streifen (7) abstützt.7. Device according to one of claims 1-6, characterized characterized in that the guiding and pressing device a roller conveyor (25) which supports the first leg (14) the induction coil as well as the two edge areas of the packaging material web and the strip (7). 809822/0242809822/0242
DE2653753A 1976-11-26 1976-11-26 Device for producing a packaging tube from a packaging material web by welding the edge areas Expired DE2653753C2 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
DE2653753A DE2653753C2 (en) 1976-11-26 1976-11-26 Device for producing a packaging tube from a packaging material web by welding the edge areas
SE7712890A SE431434B (en) 1976-11-26 1977-11-15 DEVICE FOR CONTINUOUS PREPARATION OF A PACKAGING HOSE OF A WELDABLE PACKAGING MATERIAL COVER
NL7712787A NL7712787A (en) 1976-11-26 1977-11-21 DEVICE FOR MANUFACTURING A PACKAGING HOSE FROM A PACKAGING MATERIAL LINE BY JOINING THE EDGE AREAS.
AT838677A AT366976B (en) 1976-11-26 1977-11-23 DEVICE FOR CONTINUOUSLY PRODUCING A PACKING HOSE
FR7735585A FR2372026A1 (en) 1976-11-26 1977-11-25 Plastic sealing strip inductively welded across joint - using inductor on one side only (NL 30.5.78)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2653753A DE2653753C2 (en) 1976-11-26 1976-11-26 Device for producing a packaging tube from a packaging material web by welding the edge areas

Publications (2)

Publication Number Publication Date
DE2653753A1 true DE2653753A1 (en) 1978-06-01
DE2653753C2 DE2653753C2 (en) 1986-04-17

Family

ID=5994048

Family Applications (1)

Application Number Title Priority Date Filing Date
DE2653753A Expired DE2653753C2 (en) 1976-11-26 1976-11-26 Device for producing a packaging tube from a packaging material web by welding the edge areas

Country Status (5)

Country Link
AT (1) AT366976B (en)
DE (1) DE2653753C2 (en)
FR (1) FR2372026A1 (en)
NL (1) NL7712787A (en)
SE (1) SE431434B (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4690668A (en) * 1985-10-10 1987-09-01 Robert Bosch Gmbh Method and apparatus for making a butt seam having a cover strip on a tube of multi-layer packaging material
US4709533A (en) * 1986-12-22 1987-12-01 Minigrip, Inc. Method and apparatus for making reclosable bags in a form, fill and seal machine
WO1997022524A1 (en) * 1995-12-20 1997-06-26 Tetra Laval Holdings & Finance S.A. A method and device at a longitudinal joint sealing of a package blank
WO1997022523A1 (en) * 1995-12-20 1997-06-26 Tetra Laval Holdings & Finance S.A. A method and device for accomplishing a joint of polymer lined aluminium
CN108357732A (en) * 2018-03-27 2018-08-03 广州市铭慧机械股份有限公司 A kind of high-frequency induction heating mechanism
US11247405B2 (en) * 2017-03-03 2022-02-15 Tetra Laval Holdings & Finance S.A. Inductor for induction welding of a packaging material

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4210477A (en) * 1978-06-30 1980-07-01 American Can Company Tube forming method
US4677012A (en) * 1985-11-07 1987-06-30 Hunter Douglas Inc. Honeycomb structure with band joined folded material and method of making same

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2946168A (en) * 1957-10-08 1960-07-26 Rca Corp Method and apparatus for sealing metal foil
DE1479342B1 (en) * 1964-06-11 1970-09-03 Heller Jun William C Method for producing a connection between two material webs or layer surfaces by heat sealing at predetermined sealing areas
AT302908B (en) * 1971-01-11 1972-11-10 Karlsruhe Augsburg Iweka Device for the production of transverse closures on tube-shaped, compressible containers, by means of inductively supplied high-frequency energy

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2946168A (en) * 1957-10-08 1960-07-26 Rca Corp Method and apparatus for sealing metal foil
DE1479342B1 (en) * 1964-06-11 1970-09-03 Heller Jun William C Method for producing a connection between two material webs or layer surfaces by heat sealing at predetermined sealing areas
AT302908B (en) * 1971-01-11 1972-11-10 Karlsruhe Augsburg Iweka Device for the production of transverse closures on tube-shaped, compressible containers, by means of inductively supplied high-frequency energy

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4690668A (en) * 1985-10-10 1987-09-01 Robert Bosch Gmbh Method and apparatus for making a butt seam having a cover strip on a tube of multi-layer packaging material
US4709533A (en) * 1986-12-22 1987-12-01 Minigrip, Inc. Method and apparatus for making reclosable bags in a form, fill and seal machine
USRE34905E (en) * 1986-12-22 1995-04-18 Minigrip, Inc. Method and apparatus for making reclosable bags in a form, fill and seal machine
WO1997022524A1 (en) * 1995-12-20 1997-06-26 Tetra Laval Holdings & Finance S.A. A method and device at a longitudinal joint sealing of a package blank
WO1997022523A1 (en) * 1995-12-20 1997-06-26 Tetra Laval Holdings & Finance S.A. A method and device for accomplishing a joint of polymer lined aluminium
US11247405B2 (en) * 2017-03-03 2022-02-15 Tetra Laval Holdings & Finance S.A. Inductor for induction welding of a packaging material
CN108357732A (en) * 2018-03-27 2018-08-03 广州市铭慧机械股份有限公司 A kind of high-frequency induction heating mechanism

Also Published As

Publication number Publication date
SE431434B (en) 1984-02-06
FR2372026B1 (en) 1982-10-29
AT366976B (en) 1982-05-25
DE2653753C2 (en) 1986-04-17
SE7712890L (en) 1978-05-27
NL7712787A (en) 1978-05-30
FR2372026A1 (en) 1978-06-23
ATA838677A (en) 1981-10-15

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