DE2157951A1 - Plastic film separation - using focused infra-red rays to melt thermoplastic layer from woven carrier - Google Patents

Plastic film separation - using focused infra-red rays to melt thermoplastic layer from woven carrier

Info

Publication number
DE2157951A1
DE2157951A1 DE2157951A DE2157951A DE2157951A1 DE 2157951 A1 DE2157951 A1 DE 2157951A1 DE 2157951 A DE2157951 A DE 2157951A DE 2157951 A DE2157951 A DE 2157951A DE 2157951 A1 DE2157951 A1 DE 2157951A1
Authority
DE
Germany
Prior art keywords
light
film
thermoplastic
thermoplastic film
band
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.)
Pending
Application number
DE2157951A
Other languages
German (de)
Inventor
Herbert Fehrensen
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.)
Messer Griesheim GmbH
Original Assignee
Messer Griesheim 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 Messer Griesheim GmbH filed Critical Messer Griesheim GmbH
Priority to DE2157951A priority Critical patent/DE2157951A1/en
Publication of DE2157951A1 publication Critical patent/DE2157951A1/en
Pending legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • 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
    • B29C65/14—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D3/00—Cutting work characterised by the nature of the cut made; Apparatus therefor
    • B26D3/16—Cutting rods or tubes transversely
    • 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
    • B29C65/14—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation
    • B29C65/1403—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation characterised by the type of electromagnetic or particle radiation
    • B29C65/1412—Infrared [IR] radiation
    • 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
    • B29C65/14—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation
    • B29C65/1429—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation characterised by the way of heating the interface
    • B29C65/1454—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation characterised by the way of heating the interface scanning at least one of the parts to be joined
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • 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
    • B29C65/14—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation
    • B29C65/1496—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation making use of masks
    • 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
    • B29C65/74—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by welding and severing, or by joining and severing, the severing being performed in the area to be joined, next to the area to be joined, in the joint area or next to the joint area
    • B29C65/747—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by welding and severing, or by joining and severing, the severing being performed in the area to be joined, next to the area to be joined, in the joint area or next to the joint area using other than mechanical means
    • B29C65/7473—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by welding and severing, or by joining and severing, the severing being performed in the area to be joined, next to the area to be joined, in the joint area or next to the joint area using other than mechanical means using radiation, e.g. laser, for simultaneously welding and severing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
    • B29C66/112—Single lapped joints
    • B29C66/1122—Single lap to lap joints, i.e. overlap joints
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/13—Single flanged joints; Fin-type joints; Single hem joints; Edge joints; Interpenetrating fingered joints; Other specific particular designs of joint cross-sections not provided for in groups B29C66/11 - B29C66/12
    • B29C66/137—Beaded-edge joints or bead seals
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
    • B29C66/41—Joining substantially flat articles ; Making flat seams in tubular or hollow articles
    • B29C66/43—Joining a relatively small portion of the surface of said articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—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
    • B29C66/818—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 cooling constructional aspects, or by the thermal or electrical insulating or conducting constructional aspects of the welding jaws or of the clamps ; comprising means for compensating for the thermal expansion of the welding jaws or of the clamps
    • B29C66/8181—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 cooling constructional aspects, or by the thermal or electrical insulating or conducting constructional aspects of the welding jaws or of the clamps ; comprising means for compensating for the thermal expansion of the welding jaws or of the clamps characterised by the cooling constructional aspects
    • B29C66/81815—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 cooling constructional aspects, or by the thermal or electrical insulating or conducting constructional aspects of the welding jaws or of the clamps ; comprising means for compensating for the thermal expansion of the welding jaws or of the clamps characterised by the cooling constructional aspects of the clamps
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/83—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
    • B29C66/836—Moving relative to and tangentially to the parts to be joined, e.g. transversely to the displacement of the parts to be joined, e.g. using a X-Y table
    • 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
    • B29C65/14—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation
    • B29C65/16—Laser beams
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/71—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the composition of the plastics material of the parts to be joined

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Thermal Sciences (AREA)
  • Optics & Photonics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)

Abstract

Using quartz halogen, gas discharge, arc or laser strip sources, a mirror focuses the rays into a burning point between two shrouding strips over the woven carrier and its polyester or polypropylene film cladding. The effect is to melt off the thermoplastic film, leaving a welded edge at the sides of the operating zone, while cooling circuits prevent the carrier from overheating and inhibiting the molten thermoplastic from clinging.

Description

Kennwort: Thermoplastfoliensohweißen Trennschweißverfahren ftir Thermoplaotenfolien und Vorrichtllng zur Durchführung des Verfahrens.Keyword: Thermoplastic foil welding cut-off welding process for thermoplastic foils and device for carrying out the procedure.

Die Erfindung betrifft ein Trennschweißverfahren für Thermoplastenfolien.The invention relates to a separation welding process for thermoplastic films.

Die bisher bekannten Verfahren zum Trennen von Thermoplasten mittels Abschervorrichtungen, Messern, Sägen und anderen mechanischen Werkzeugen weisen zahlreiche Nachteile auf. Das Ab trennen ist zeitraubend, Formschnitte erfordern komplizierte Werkzeuge, und beim -Trennen von Geweben besteht die Gefahr, daß die Schnittkanten ausfasern.The previously known method for separating thermoplastics by means of Have shearing devices, knives, saws and other mechanical tools numerous disadvantages. Separating them is time-consuming and requires shape cuts complicated tools, and when separating tissues there is a risk that the Fibrate cut edges.

Aufgabe der Erfindung ist es ein Verfahren zu schaffen, das diese Nachteile nicht aufeist und es ermöglicht, Folien und Gewebe aus thermoplastichen Kunststoffen, wie z.B. Polyester- oder Polypropylen-Streifen schnell, einfach und genau zu trennen oder zu schneiden und hierbei an den Trennschnittraändern zugleich eine Verschweißung zu liefern, um das Ausfransen von geschnittenen Geweben zu verhindern.The object of the invention is to provide a method that this There are no disadvantages and it is possible to use thermoplastic foils and fabrics Plastics such as polyester or polypropylene strips quickly, easily and to be separated or cut exactly and at the same time at the separating cut edges provide a seal to prevent fraying of cut fabrics.

Die ,tuSgate wird dadurch gelöst, daß ein Infrarot-Lichtstrahl bündel über die Folie geführt wird, die Lichtenergei durch Erwärmung die Folien durchschmilzt und die Trennr.inder eine Verschweißung erhalten.The tuSgate is solved by bundling an infrared light beam is passed over the film, the light energy melts through the film by heating and the dividing ring received in a weld.

Bei einer besonders einfachen Vorrichtung zur Durchführung des Trennschweißverfahrens werden eine Lichtquelle zur Erzeugung einer Infrarot-Lichtkonzentration In der Ebene der Thermoplast-Folie und eine Antriebsvorrichtung zur Erzeugung einer relativen Bewegung zwischen Lichtquelle und Thermoplast-Folie vorgesehen.In a particularly simple device for performing the cut-off welding process become a light source for generation an infrared light concentration In the plane of the thermoplastic film and a drive device for generating a relative movement between the light source and thermoplastic film provided.

Die Lichtkonzentration ann aus einem Lichtpunkt oder einem Lichtband bestehen, wobei der Lichtpunkt Formschnitte erleichtert und das Lichtband eine höhere Schnittgeschwindigkeit ermöglicht.The concentration of light comes from a point of light or a band of light exist, whereby the light point facilitates shaped cuts and the light band a higher one Cutting speed allows.

Um die Schnittbreite festzulegen und störende Seitenstrahlen abzuschneiden, sind bei einer vorteilhaften Ausgestaltung der Vorrichtung gemäß der Erfindung auf beiden Seiten des Lichtbandes Blenden dicht oberhalb der Thermoplast-Folien-Ebene angeordnet.To set the cutting width and cut off disturbing side rays, are in an advantageous embodiment of the device according to the invention panels on both sides of the light band just above the thermoplastic film level arranged.

Eine andere vorteilhafte Weiterbildung der Vorrichtung ist mit einer Unterlage zur Abstützung der Thermoplastfolie ausgestattet.Another advantageous development of the device is with a Base to support the thermoplastic film.

Bei einer weiteren zweckmäßigen Ausgestaltung des Verfahrens nach der Erfindung, die eine besonders schnelle Verarbeitung erjaubt, weist die Antriebsvorrichtung einer. Antrieb für eine Bewegung der Folie in Richtung der Längsachse des Lichtbandes zwischen der Unterlage und den Blenden auf. Bei Verwendung einer Punktlichtquelle besitzt die Vorrichtung zur Durchführung des Verfahrens im Bereich der punktförmigen Lichtkonzentration einen eine Kreisblende bildenden Ring direkt oberhalb der Folien-Ebene Um ein Verkleben der Blenden init der Folie zur verhindern, weisen bei einer anderen Weiterbildung der Erfindung die Blenden Kühlflüssigkeit enthaltende Hohlräume auf. Ein Verkleben der Unterlage mit der Folie läßt sich vermeiden, indem nach einer7a£ic\eren Ausgestaltung der Erfindung die Unterlage im Bereich der Lichtkonzentration eine Kühleinrichtung angeordnet ist.In a further expedient embodiment of the method according to the invention, which requires particularly fast processing, has the drive device one. Drive for moving the film in the direction of the longitudinal axis of the light strip between the base and the panels. When using a point light source possesses the device for carrying out the method in the area of punctiform Concentration of light creates a ring forming a circular aperture directly above the film level In order to prevent the panels from sticking to the film, another Further development of the invention, cavities containing cooling liquid are provided on the screens. A sticking of the base to the film can be avoided by taking care of it after a Embodiment of the invention, the base in the area of light concentration a Cooling device is arranged.

Erfindungsgemäß wird ferner vorteilhafterweise das Infrarotlicht mit Irllfe eine Quarz-Halogen-Lampe erzeugt.According to the invention, the infrared light is also advantageously with Irllfe produced a quartz halogen lamp.

Doch sind auch andere Lichtquellen geeignet, wie z.B. Gasentla-- Laserlicht dungslampen, Bogenlicht, oder Anordnungen, wie sie z.B. die DOS 1 627 554 beschreibt.However, other light sources are also suitable, such as gas discharge Laser light lamps, arc lights, or arrangements such as those described in DOS 1 627 554.

Zur Erhöhung der Fertigungskapazität können erfindungsgemäß auch mehrere Schneidvorrichtungen gleichzeitig verwendet werden.According to the invention, several Cutting devices are used simultaneously.

Weitere Vorteile, erkmale und Anwendungsmöglichkeiten der Erfindung ergeben sich aus der beiliegendenDarstellung eines Ausführungsbeispiels sowie aus der folgenden Beschreibung.Further advantages, features and possible uses of the invention result from the attached illustration of an exemplary embodiment as well as from the following description.

Es zeigt: Fig. 1 eine Schnittansicht einer Vorrichtung zum Trennschweißen einer Thermoplastfolie, und Fig. 2 eine Seitenansicht der Vorrichtung nach Fig. 1 mit einer Darstellung der Transportvorrichtung für die Folie.It shows: FIG. 1 a sectional view of a device for cut-off welding a thermoplastic film, and FIG. 2 shows a side view of the device according to FIG. 1 with a representation of the transport device for the film.

Fig. 1 zeigt einen Bandstrahler 3, der eine linienförmige Lichtquelle und einen Spiegel 8 aufweist, in dem die Lichtquelle 7 so angeordnet ist, daß das Licht zu einer Brennlinie c gebündelt wird. Die vorteilhafterweise elektrisch betriebene Lichtquelle, z.B. eine unter der Bezeichnung "Micor" bekannt gewordene Quarz-Halogen-Lanpe,einittiert vorwiegend Lichtstrahlung imfiInfrarotbereich.Fig. 1 shows a tape radiator 3, which has a linear light source and a mirror 8 in which the light source 7 is arranged so that the Light is bundled to a focal line c. The advantageously electrically operated Light source, e.g. a quartz-halogen lanpe known under the name "Micor" predominantly light radiation in the infrared range.

In der Brennlinie c der Lichtquelle wird das zu trennende therinoplastische Material 6 auf einer Unterlage 4 gehaltert und entsprechend der auszuführenden Schnittlinie bewegt. Um die Unterlage gegen Lberhitzung zu schützen und um ein Verkleben des thermoplastischen Materials 6 mit der Unter]age. 4 zu verhindeln, ist eine Kühlvorrichtung vorgesehen, die aus einer entlang der Lichtquelle 3 verlaufenden, Kuhlflüssigkeit führenden Leitung 5 besteht. Zwei Streifen 1, 2 verlaufen parallel zur Linienlichtquelle 3 dicht oberhalb der Folie 6 und schützen diese gegen unerwünschtes Streulicht. Die Streifen 1, 2 bilden einen Spalt oder Blende, durch den hindurch die Lichtenergie auf die Folie 6 auftrifft. Die Spaltbreite bestimmt die Breite des Schnitts und die Menge des Materials, das zum Verschweißen der Schnittkanten zur Verfügung steht. Die Blendenstreifen 1, 2 sind hohl und führen elne Kühlflüssigkeit 8, die sie kühlt und ebenfalls ein Verkleben dieser Streifen mit der Folie verhütet. Die einander zugewandten unteren Ecken der Blenenstreifen bilden einen spsen Winkel, damit auch seitlich auftreffende Strahlen der Lichtquelle 3 die Brennlinie erreichen.The therinoplastic to be separated is in the focal line c of the light source Material 6 held on a base 4 and corresponding to the cutting line to be made emotional. To protect the base against overheating and to prevent the thermoplastic material 6 with the under] age. Preventing 4 is one Cooling device is provided, which consists of a running along the light source 3, Cooling liquid leading line 5 consists. Two strips 1, 2 run parallel to the line light source 3 just above the film 6 and protect this against unwanted stray light. The strips 1, 2 form a gap or Aperture through which the light energy hits the film 6. The gap width determines the width of the cut and the amount of material that is to be welded the cut edges are available. The cover strips 1, 2 are hollow and lead elne cooling liquid 8, which cools them and also a gluing of these strips prevented with the foil. The facing lower corners of the visor strips form an acute angle, so that the rays of the light source incident from the side 3 reach the focal line.

Fig. 2 zeigt eine Möglichkeit, streifenförmiges, thermoplastisches Material in Längsrichtung zu trennen. Das Streifenmaterial wird von der Rolle A abgezogen, über die Unterlage 4 hinweg und unter den Blenden 1, 2 hindurchgeführt. Während sich die Folie unterhalb der Lichtquelle bewegt, erhitzt die Strahlung der Lichtquelle 3 das Kunststoffmaterial bis über den Sclielzpunkt. Ilierbei wird die Folie getrennt; das weggeschmolzene Plastikmaterial verklebt und verschweißt die Schnittränder. Anschließend wird das getrennte Streifenrnaterial wieder auf der Rolle B aufgewickelt. Die Geschwindigkeit, mit der der Folienstreife} t werden kann5 hängt von Spaltbreite und -länge, vorn Mater und Lichtstärke ab. Itit einem Bandstrahler von 5 kW Leistung wurde eine Schnittgeschwindigkeitv9n 67 m/min erreichtFig. 2 shows a possibility, strip-shaped, thermoplastic Separate material lengthways. The strip material is taken from roll A peeled off, passed over the base 4 and under the panels 1, 2. As the film moves beneath the light source, the radiation heats the Light source 3 the plastic material up to the bottom point. Ilierbei will be Foil separated; the melted away plastic material glues and welds the Cut edges. The separated strip material is then put back on the Roll B wound up. The speed at which the film strip can become 5 depends on the width and length of the gap, the material and light intensity in front. Itit a ribbon radiator A cutting speed of 67 m / min was achieved with an output of 5 kW

Claims (12)

Patentansprüche 1. Trennschweißverfahren für Thermoplastenfolien, dadurch gekennzeichnet, daß ein Infrarot-Lichtstrahlbündel (c) über die Folie (6) geführt wird, die Lichtenergie die Folien durch Erwärmung erwärmt, durchschmilzt und an den Trennrändern eine Verschweißung bewirkt. Claims 1. Separation welding process for thermoplastic films, characterized in that an infrared light beam (c) passes over the film (6) is performed, the light energy heats the foils by heating them, melts them and causes a weld at the separating edges. 2. Vorrichtung zur Durchführung des Trennschazeißverfahrens nach Anspruch 1, gekennzeichnet durch eine der Erzeugung einer Infrarot-Lichtkonzentration (c) in der Ebene der Thermoplast-Folie (6) dienende Lichtquelle (3) sowie durch eine Antriebsvorrichtung (A-B) zur Erzeugung einer relativen Bewegung zwischen Lichtquelle (3) und Thermoplast-Folie (6).2. Apparatus for performing the Trennschazeissver method according to claim 1, characterized by one of the generation of an infrared light concentration (c) in the plane of the thermoplastic film (6) serving light source (3) and by a Drive device (A-B) for generating a relative movement between light sources (3) and thermoplastic film (6). 3. Vorrichtung nach Anspruch 2, dadurch gekennzeichnet, daß die LichtqueGle ein Lichtpunkt ist.3. Apparatus according to claim 2, characterized in that the LichtqueGle is a point of light. 4. Vorrichtung nach Anspruch 2, dadurch gekennzeiclmet, daß die Lichtquelle ein Lichtband ist.4. Apparatus according to claim 2, characterized gekennzeiclmet that the light source is a band of light. 5. Vorrichtung nach Anspruch 4, dadurch gekennzeichnet, daß auf beiden Seiten der bandförmigen Lichtkonzentration (c) Blenden bildende Streifen (1,2) dicht oberhalb der Thermoplast-Folien-.5. Apparatus according to claim 4, characterized in that on both Sides of the band-shaped light concentration (c) diaphragms forming strips (1,2) close above the thermoplastic film. Ebene angeordnet sind. Are arranged level. 6. Vorrichtung nach Anspruch 5, gekennzeichnet durch eine Unterlage (4) zur Abstützung der Thermoplast-Folie (6).6. Apparatus according to claim 5, characterized by a pad (4) to support the thermoplastic film (6). 7. Vorrichtung nach Anspruch 6, dadurch gekennzeichnet, daß die Antriebsvorrichtung (A-B) einen Antrieb für eine Bewegung der Folie (6) in Richtung der Längsachse des~ Lichtbandes (C) zwischen der Unterlage (4) und den Blenden (1,2) aufweist.7. Apparatus according to claim 6, characterized in that the drive device (A-B) a drive for moving the film (6) in the direction of the longitudinal axis of the ~ Light band (C) between the base (4) and the diaphragms (1,2). 8. Vorrich-ng nach Anspruch 3, dadurch gekennzeichnet, daß im Bereich der punktförmigen Lichtkonzentration (c) ein eine Kreisblende bildender Ring direkt oberhalb der Folien Ebene angeordnet ist.8. Vorrich-ng according to claim 3, characterized in that in the area the point-like light concentration (c) a ring forming a circular aperture directly is arranged above the foil level. 9. Vorrichtung nach Ansprüchen 3-8, dadurch gekennzeichnet, daß die Blenden Kühlflüssigkeit (8) enthaltende Hohlraume aufweisen.9. Device according to claims 3-8, characterized in that the Have apertures cooling liquid (8) containing cavities. 10. Vorrichtung nach Ansprüchen 3-9, dadurch gekennzeichnet, daß die Kühleinrichtung für die Unterlage in Bereich der Lichtkonzentration angeordnet ist.10. Device according to claims 3-9, characterized in that the Cooling device for the base is arranged in the area of the light concentration. 11. Vorrichtung nach Ansprüchen 1-1O, dadurch gekennzeichnet, daß zur Erzeugung des Infrarotlichtstrahlbündels (c) eine Ouarz-halogen-Laiiipe vorgesehen ist.11. Device according to claims 1-1O, characterized in that an Ouarz-halogen-Laiiipe is provided to generate the infrared light beam (c) is. 12. Vorrichtung nach Ansprüchen 1-11, dadurchgekennzeichnet, daß mehrere Schneidvorrichtungen gleichzeitig verwendet werden.12. Device according to claims 1-11, characterized in that several Cutting devices are used simultaneously.
DE2157951A 1971-11-23 1971-11-23 Plastic film separation - using focused infra-red rays to melt thermoplastic layer from woven carrier Pending DE2157951A1 (en)

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0312712A1 (en) * 1987-09-23 1989-04-26 Georg Fischer Aktiengesellschaft Method and device for welding the front ends of tubular thermoplastic parts together
WO1990003261A1 (en) * 1988-09-29 1990-04-05 Siemens Aktiengesellschaft Process and arrangement for welding thermoplastic materials using thermal radiation
WO1997027041A2 (en) * 1996-01-27 1997-07-31 Weidenhammer Packungen Kg Gmbh & Co. Process for production of tubes out of composite cardboard, device for carrying out the process and composite material used therein
DE19746402A1 (en) * 1997-10-21 1999-04-22 Fresenius Medical Care De Gmbh Method and device for welding plastic films, preferably polyolefin films
WO2000066345A2 (en) * 1999-04-30 2000-11-09 Powerlasers Ltd. Method of clamping thermoplastic pieces and heat control for laser welding
AT515542B1 (en) * 2014-04-03 2015-10-15 Worff Herwig Dipl Ing Method for producing sacks from a fabric tube

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0312712A1 (en) * 1987-09-23 1989-04-26 Georg Fischer Aktiengesellschaft Method and device for welding the front ends of tubular thermoplastic parts together
WO1990003261A1 (en) * 1988-09-29 1990-04-05 Siemens Aktiengesellschaft Process and arrangement for welding thermoplastic materials using thermal radiation
WO1997027041A2 (en) * 1996-01-27 1997-07-31 Weidenhammer Packungen Kg Gmbh & Co. Process for production of tubes out of composite cardboard, device for carrying out the process and composite material used therein
WO1997027041A3 (en) * 1996-01-27 1998-02-26 Weidenhammer Packungen Process for production of tubes out of composite cardboard, device for carrying out the process and composite material used therein
DE19746402A1 (en) * 1997-10-21 1999-04-22 Fresenius Medical Care De Gmbh Method and device for welding plastic films, preferably polyolefin films
WO2000066345A2 (en) * 1999-04-30 2000-11-09 Powerlasers Ltd. Method of clamping thermoplastic pieces and heat control for laser welding
WO2000066345A3 (en) * 1999-04-30 2001-04-26 Powerlasers Ltd Method of clamping thermoplastic pieces and heat control for laser welding
AT515542B1 (en) * 2014-04-03 2015-10-15 Worff Herwig Dipl Ing Method for producing sacks from a fabric tube
AT515542A4 (en) * 2014-04-03 2015-10-15 Worff Herwig Dipl Ing Method for producing sacks from a fabric tube

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