[go: up one dir, main page]

DE1295113B - Apparatus for embossing a pattern on a dielectric sheet material - Google Patents

Apparatus for embossing a pattern on a dielectric sheet material

Info

Publication number
DE1295113B
DE1295113B DEG22963A DEG0022963A DE1295113B DE 1295113 B DE1295113 B DE 1295113B DE G22963 A DEG22963 A DE G22963A DE G0022963 A DEG0022963 A DE G0022963A DE 1295113 B DE1295113 B DE 1295113B
Authority
DE
Germany
Prior art keywords
electrode
embossing
counter electrode
plate
resilient
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
DEG22963A
Other languages
German (de)
Inventor
Stallard Ralph Martin
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.)
Motors Liquidation Co
Original Assignee
General Motors Corp
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 General Motors Corp filed Critical General Motors Corp
Publication of DE1295113B publication Critical patent/DE1295113B/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B6/00—Heating by electric, magnetic or electromagnetic fields
    • H05B6/46—Dielectric heating
    • H05B6/62—Apparatus for specific applications
    • 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
    • B29C59/00—Surface shaping of articles, e.g. embossing; Apparatus therefor
    • B29C59/02—Surface shaping of articles, e.g. embossing; Apparatus therefor by mechanical means, e.g. pressing
    • 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
    • B29C65/04—Dielectric heating, e.g. high-frequency welding, i.e. radio frequency welding of plastic materials having dielectric properties, e.g. PVC
    • 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
    • B29C66/006—Preventing damaging, e.g. 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
    • 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
    • B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
    • B29C66/41—Joining substantially flat articles ; Making flat seams in tubular or hollow articles
    • B29C66/43—Joining a relatively small portion of the surface of said articles
    • B29C66/433—Casing-in, i.e. enclosing an element between two sheets by an outlined seam
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/40—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
    • B29C66/45—Joining of substantially the whole surface of the 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
    • B29C66/72—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
    • B29C66/72—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
    • B29C66/729—Textile or other fibrous material made from plastics
    • 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
    • B29C66/812—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 composition, by the structure, by the intensive physical properties or by the optical properties of the material constituting the pressing elements, e.g. constituting the welding jaws or clamps
    • B29C66/8124—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 composition, by the structure, by the intensive physical properties or by the optical properties of the material constituting the pressing elements, e.g. constituting the welding jaws or clamps characterised by the structure of the material constituting the pressing elements, e.g. constituting the welding jaws or 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
    • B29C66/81—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
    • B29C66/812—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 composition, by the structure, by the intensive physical properties or by the optical properties of the material constituting the pressing elements, e.g. constituting the welding jaws or clamps
    • B29C66/8126—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 composition, by the structure, by the intensive physical properties or by the optical properties of the material constituting the pressing elements, e.g. constituting the welding jaws or clamps characterised by the intensive physical properties or by the optical properties of the material constituting the pressing elements, e.g. constituting the welding jaws or clamps
    • B29C66/81262—Electrical and dielectric properties, e.g. electrical conductivity
    • B29C66/81263—Dielectric properties
    • 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
    • B29C66/81427—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 ridge, e.g. for making a weakening line; comprising a single tooth
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/814—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/8145—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the constructional aspects of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/81457—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the constructional aspects of the pressing elements, e.g. of the welding jaws or clamps comprising a block or layer of deformable material, e.g. sponge, foam, rubber
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/83—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
    • B29C66/832—Reciprocating joining or pressing tools
    • B29C66/8322—Joining or pressing tools reciprocating along one axis
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/81—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
    • B29C66/812—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 composition, by the structure, by the intensive physical properties or by the optical properties of the material constituting the pressing elements, e.g. constituting the welding jaws or clamps
    • B29C66/8122—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 composition, by the structure, by the intensive physical properties or by the optical properties of the material constituting the pressing elements, e.g. constituting the welding jaws or clamps characterised by the composition of the material constituting the pressing elements, e.g. constituting the welding jaws or clamps
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S264/00—Plastic and nonmetallic article shaping or treating: processes
    • Y10S264/46—Molding using an electrical heat
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S425/00—Plastic article or earthenware shaping or treating: apparatus
    • Y10S425/013—Electric heat

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Textile Engineering (AREA)
  • Shaping Of Tube Ends By Bending Or Straightening (AREA)

Description

Die Erfindung betrifft eine Vorrichtung zum Prägen eines Musters auf ein dielektrisches Plattenmaterial mit einer Prägeelektrode und einer Gegenelektrode, zwischen denen das zu prägende Material gepreßt wird und zwischen denen ein elektrisches Hochfrequenzfeld besteht, durch das das zu prägende Material erwärmt wird.The invention relates to a device for embossing a pattern a dielectric sheet material with an embossing electrode and a counter electrode, between which the material to be embossed is pressed and between which an electrical one There is a high-frequency field through which the material to be embossed is heated.

Derartige Vorrichtungen arbeiten nach dem Prinzip eines Plattenkondensators, der mit einem Dielektrikum gefüllt ist und somit erst bei wesentlich höherer elektrischer Feldstärke durchschlägt als ein mit Luft gefüllter Plattenkondensator. Je höher die elektrische Feldstärke in dem zwischen den Elektroden befindlichen dielektrischen Material ist, desto schneller und besser erwärmtes sich..Such devices work on the principle of a plate capacitor, which is filled with a dielectric and therefore only with a much higher electrical Field strength breaks down as a plate capacitor filled with air. The higher the electric field strength in the dielectric located between the electrodes Material, the faster and better it is heated.

Bei den bekannten Vorrichtungen dieser Art kann jedoch die Feldstärke nicht über die Durchschlagsfeldstärke der Luft hinaus gesteigert werden, da es sonst zu Durchschlägen in den dem dielektrischen Plattenmaterial parallelliegendenLuftstrecken kommt und eine Lichtbogenbildung eintritt, wodurch das Material beschädigt werden würde.In the known devices of this type, however, the field strength not be increased beyond the breakdown field strength of the air, otherwise to breakdowns in the air paths parallel to the dielectric sheet material comes and arcing occurs, damaging the material would.

Die der Erfindung zugrunde liegende Aufgabe besteht darin, eine Vorrichtung der genannten Gattung zu schaffen, bei der eine höhere elektrische Feldstärke im dielektrischen Material ermöglicht wird, ohne daß ein Durchschlag auf einer Luftstrecke eintritt.The object on which the invention is based is to provide a device to create the genus mentioned, in which a higher electric field strength in the dielectric material is made possible without a breakdown in an air gap entry.

Erfindungsgemäß wird diese Aufgabe dadurch gelöst, daß wenigstens eine der beiden Elektroden in beiden Richtungen parallel zum dielektrischen Plattenmaterial geringere Abmessungen hat als dieses.According to the invention this object is achieved in that at least one of the two electrodes in both directions parallel to the dielectric sheet material has smaller dimensions than this.

Durch die erfindungsgemäße Ausbildung ist dafür gesorgt, daß die Luftstrecken zwischen den beiden Elektroden sämtlich länger sind als die vom zu prägenden dielektrischen Material ausgefüllten Elektrodenabstände. Da die Feldstärke dem Elektrodenabstand umgekehrt proportional ist, wird in dem dielektrischen Material eine höhere Feldstärke erzeugt als die zum Durchschlag in Luft führende.The inventive training ensures that the clearances between the two electrodes are all longer than those of the dielectric to be embossed Material filled electrode gaps. Because the field strength corresponds to the electrode spacing is inversely proportional, there will be a higher field strength in the dielectric material generated than that leading to breakdown in air.

Bei einer Ausführungsform hat die Gegenelektrode geringere Abmessungen als das zu prägende dielektrische Plattenmaterial. Dabei ist der eine Pol des Hochfrequenzgenerators an die Prägelektrode und . der andere an die Gegenelektrode angeschlossen.In one embodiment, the counter electrode has smaller dimensions as the dielectric sheet material to be embossed. One pole is the high-frequency generator to the embossing electrode and. the other connected to the counter electrode.

Die Ausbildung kann dabei so getroffen sein, daß die Gegenelektrode mit ihrer der Prägeelektrode abgewandten Seite auf einer federnden Platte aufliegt; die den Druck aufnimmt und ausgleicht.The training can be made so that the counter electrode with its side facing away from the embossing electrode rests on a resilient plate; that absorbs and compensates for the pressure.

Bei einer weiteren Ausführungsform ist vorgesehen, daß die federnde Platte aus isolierendem Material besteht und in beiden Richtungen parallel zur Gegenelektrode von größeren Abmessungen ist als diese, daß eine weitere Platte aus federndem isolierendem ; Material zwischen dem zu prägenden dielektrischen Plattenmaterial und der Gegenelektrode eingefügt ist, mit den Rändern über die Gegenelektrode hinausreicht und auf der erstgenannten federnden Platte aufliegt und daß schließlich der eine Pol des Hochfrequenzgenerators an die Prägeelektrode, der andere an eine dritte Elektrode angeschlossen ist, welche auf der der Gegenelektrode abgewandten Seite der ersten federnden Platte angebracht ist.In a further embodiment it is provided that the resilient Plate made of insulating material and parallel to the counter electrode in both directions of larger dimensions than this is that another plate of resilient insulating ; Material between the dielectric sheet material to be embossed and the counter electrode is inserted, with the edges extending beyond the counter electrode and on the first-mentioned resilient plate rests and that finally one pole of the high-frequency generator to the embossing electrode, the other is connected to a third electrode, which mounted on the side of the first resilient plate facing away from the counter electrode is.

Um einer relativen Feldlinienkonzentration an den Elektrodenkanten entgegenzuwirken, können die einander gegenüberliegenden Kanten der Elektroden abgerundet sein. Die Erfindung wird im folgenden beispielsweise an Hand der Zeichnung beschrieben; in dieser zeigt F i g. 1 eine schematische Ansicht einer Ausführungsform der erfindungsgemäßen Vorrichtung, F i g. 2 eine schematische Ansicht einer abgewandelten Ausführungsform, F i g. 3 eine perspektivische Ansicht eines zusammengesetzten dielektrischen Plattenmaterials, das mit einer Vorrichtung nach F i g. 1 geformt wurde, und F i g. 4 eine perspektivische Ansicht eines zusammengesetzten dielektrischen Plattenmaterials, das mit einer Vorrichtung nach F i g. 2 geformt wurde.About a relative field line concentration at the electrode edges To counteract this, the opposing edges of the electrodes can be rounded be. The invention is described below, for example, with reference to the drawing; in this FIG. 1 is a schematic view of an embodiment of the invention Device, FIG. 2 a schematic view of a modified embodiment, F i g. 3 is a perspective view of a composite dielectric sheet material; that with a device according to FIG. 1, and FIG. 4 a perspective View of a composite dielectric sheet material in place with an apparatus according to FIG. 2 was molded.

Bei der dielektrischen Materialerhitzung wird bekanntlich ein Plattenkondensator benutzt, zwischen dessen Elektroden das zu erwärmende Material gelegt wird. Dieser Kondensator wird an eine Hochfrequenzspannung angeschlossen, wodurch die im Dielektrikum sich befindenden Partikeln polarisiert werden. Dabei werden die negativ geladenen Teilchen von der gerade negativen Elektrode abgestoßen und von der positiven Elektrode angezogen. In der nächsten Periode wird die Polarität wie auch die elektrische Wirkung umgekehrt. Dieser Vorgang wiederholt sich im Takte der angelegten Hochfrequenzspannung. Durch die gegenseitige Reibung der Teilchen bei der Vor- und Rückwärtsbewegung wird Wärme erzeugt, die in diesem Fall zur Verschweißung des zwischen den Elektroden sich befindlichen Gutes ausgenutzt wird.As is well known, a plate capacitor is used when dielectric material is heated used, between the electrodes of which the material to be heated is placed. This Capacitor is connected to a high frequency voltage, creating the in the dielectric located particles are polarized. The negatively charged Particles are repelled from the straight negative electrode and from the positive electrode dressed. In the next period the polarity as well as the electrical effect will be vice versa. This process is repeated at the rate of the applied high-frequency voltage. Due to the mutual friction of the particles when moving forwards and backwards Heat is generated which in this case is used to weld the between the electrodes existing property is exploited.

F i g. 1 zeigt eine Ausführungsform einer erfindungsgemäßen Vorrichtung, die nach diesem Prinzip arbeitet und die insbesondere zum Prägen von Polsterbezugsmaterial geeignet ist, welches beispielsweise bei 10 in F i g. 3 abgebildet ist. Nach F i g. 1 ist die Prägeelektrode 12 an einer oberen Preßplatte 14 angebracht. Auf einer unterhalb der Preßplatte 14 angeordneten unteren Preßplatte 16, die vollständig isoliert ist, ist eine Gegenelektrode 22 angeordnet, die auf einer federnden Platte 20 aufliegt, welche aus einem Material mit sehr guten Isoliereigenschaften, wie z. B. Butylgummi, besteht und welche auf einer dritten Elektrode 18 aus einem leitenden Material, wie z. B. Aluminium, aufliegt, die mit der unteren Preßplatte 16 verbunden ist. über der Gegenelektrode 22 ist eine weitere Platte 24 aus federndem isolierendem Material angebracht, die mit den Rändern über die Gegenelektrode hinausreicht und auf der federnden Platte 20 aufliegt. Das federnde Plattenteil 24 besteht aus hitzebeständigem federndem Material, wie z. B. Silikongummi. Das zu prägende Bezugspolstermaterial 10 ist zwischen der Prägeelektrode 12 und der federnden Platte 24 angeordnet. Die Prägeelektrode 12 ist an den einen Pol des Hochfrequenzgenerators 26 angeschlossen, dessen anderer Pol an die dritte Elektrode 1.8 angeschlossen ist. Die Gegenelektrode 22 ist kapazitiv über die als Hilfselektrode wirkende dritte Elektrode 18 an den Generator angeschlossen. Beim Betrieb der Vorrichtung wird das Polstermaterial 10 gleichzeitig einem vorgeschriebenen Druck und der dielektrischen Erwärmung auf Grund der Hochfrequenaspannung unterworfen, wobei dann das gewünschte Prägemuster in das Polstermaterial eingedrückt wird.F i g. 1 shows an embodiment of a device according to the invention which works according to this principle and which is particularly suitable for embossing upholstery material, which is shown, for example, at 10 in FIG. 3 is shown. According to FIG. 1, the embossing electrode 12 is attached to an upper press plate 14. On a below the press plate 14 arranged lower press plate 16, which is completely insulated, a counter electrode 22 is arranged, which rests on a resilient plate 20, which is made of a material with very good insulating properties, such as. B. butyl rubber, and which on a third electrode 18 made of a conductive material, such as. B. aluminum, which is connected to the lower press plate 16 rests. A further plate 24 made of resilient insulating material is attached above the counter electrode 22 , the edges of which extend beyond the counter electrode and rests on the resilient plate 20. The resilient plate member 24 is made of heat-resistant resilient material, such as. B. silicone rubber. The cushion cover material 10 to be embossed is arranged between the embossing electrode 12 and the resilient plate 24. The embossing electrode 12 is connected to one pole of the high-frequency generator 26, the other pole of which is connected to the third electrode 1.8. The counter electrode 22 is capacitively connected to the generator via the third electrode 18, which acts as an auxiliary electrode. During operation of the device, the cushioning material 10 is simultaneously subjected to a prescribed pressure and the dielectric heating due to the high-frequency voltage, the desired embossing pattern then being impressed into the cushioning material.

Bei der dargestellten Ausführungsform ist die Prägeelektrode 12 größer als das Bespannungspolster 10, und das letztere ist größer als die Gegenelektrode 22. Da die Gegenelektrode 22 wie eine Plattenelektrode des Kondensators wirkt (die Energie wird mit Hilfe einer Hochfrequenzkapazitätskopplung durch den Butylgummi 20 hindurch übertragen), wird das elektrische Feld von der Prägeelektrode 12 zu der Gegenelektrode 22 längs einer Strecke, die keine zerstörenden Lichtbögen erzeugt, z. B. entlang den gestrichelten Linien 28, nach einwärts gezogen, wenn das Bespannungspolster 10, das im Vergleich zu Luft ein relativ starkes Dielektrikum darstellt, erhitzt wird. Weiterhin sind die Kanten der Prägeelektrode 12 und der Gegenelektrode 22 vorzugsweise abgerundet, damit eine Konzentration des Feldes an den Rändern verhindert wird. Ohne die Gegenelektrode 22 würde das elektrische Feld von den Kanten der Prägeelektrode 12 durch die Luft, einem schwachen Dielektrikum, zur unteren Preßplatte 16 und der dritten Elektrode 18 verlaufen, wodurch eine elektrische Lichtbogenbildung mit daraus entstehenden Funken verursacht würde, die die Kanten des Polsters 10 beschädigen würden. Die Dicke der Gegenelektrode 22 kann nach Wunsch verändert werden, um den Abstand zwischen der Prägeelektrode und der unteren Preßplatte 16 und der dritten Elektrode 18 zu verändern.In the embodiment shown, the embossing electrode 12 is larger than the covering pad 10, and the latter is larger than the counter electrode 22. Since the counter electrode 22 acts like a plate electrode of the capacitor (the energy is transmitted through the butyl rubber 20 with the aid of a high-frequency capacitance coupling), the electric field from the embossing electrode 12 to the counter electrode 22 along a distance that does not generate destructive arcs, e.g. B. along the dashed lines 28, drawn inwardly when the covering pad 10, which is a relatively strong dielectric compared to air, is heated. Furthermore, the edges of the embossing electrode 12 and the counter electrode 22 are preferably rounded so that a concentration of the field at the edges is prevented. Without the counter electrode 22, the electric field would travel from the edges of the embossing electrode 12 through the air, a weak dielectric, to the lower press plate 16 and the third electrode 18 , causing an electrical arcing with resulting sparks that would hit the edges of the pad 10 would damage. The thickness of the counter electrode 22 can be changed as desired to change the distance between the embossing electrode and the lower press plate 16 and the third electrode 18 .

Die federnden Teile 20 und 24 werden hauptsächlich dazu verwendet, den Druck während des Preßvorganges auszugleichen und zu verteilen und auf diese Weise auch das Prägen von Mustern ohne Beschädigung des Bespannungsmaterials zu gewährleisten, eine wertvolle Eigenschaft bei empfindlichen Bespannungsmaterialien. Außerdem gewährt das hitzebeständige federnde Material einen zusätzlichen Schutz gegen das Entstehen elektrischer Lichtbögen.The resilient parts 20 and 24 are mainly used to to equalize and distribute the pressure during the pressing process and to this Also assign the embossing of patterns without damaging the covering material ensure a valuable property for sensitive covering materials. In addition, the heat-resistant, resilient material provides additional protection against the creation of electric arcs.

F i g. 2 zeigt eine weitere Ausführungsform der erfindungsgemäßen Vorrichtung, bei der der Arbeitsvorgang im Prinzip der gleiche ist wie bei der Vorrichtung nach F i g. 1. Eine Prägeelektrode 12' ist an der oberen Preßplatte 14', wie bei der Ausführungsform nach F i g.1, befestigt, und eine elektrisch leitende Gegenelektrode 22' wird von der dritten Elektrode 18' getragen, die an der unteren Preßplatte 16 befestigt ist.F i g. FIG. 2 shows a further embodiment of the device according to the invention, in which the working process is in principle the same as in the device according to FIG. 1. An embossing electrode 12 'is attached to the upper press plate 14', such as secured in the embodiment of F i g.1, and an electrically conductive counter electrode 22 'is of the third electrode 18' supported, secured to the lower press plate 16 is.

Zwischen der Prägeelektrode 12' und der Gegenelektrode 22' ist ein Bespannungspolster 30 aus hitze-und druckempfindlichem Material, wie z. B. das in F i g. 4 gezeigte, angeordnet, das eine metallisierte Oberflächenschicht 32 hat. Bei der Darstellung in F i g. 2 erstreckt sich das Polster 30 beträchtlich über die Prägeelektrode 12' und die Gegenelektrode 22' hinaus. Es kann jedoch - wie in F i g. 1- von der Prägeelektrode 12' teilweise überlappt werden. Wenn die Presse geschlossen ist, wird das Polster 30 der Hochfrequenzspannung des Generators 26 ausgesetzt, wodurch der Prägemustereffekt erzielt wird, der in F i g. 4 abgebildet ist. Zu diesem Zweck kann die Prägeelektrode mit entsprechenden Prägeleisten versehen sein.Between the embossing electrode 12 'and the counter electrode 22' is a covering pad 30 made of heat and pressure sensitive material, such as. B. the one in FIG. 4, which has a metallized surface layer 32. In the illustration in FIG. 2, the pad 30 extends considerably beyond the embossing electrode 12 'and the counter electrode 22'. However, as in FIG. 1- are partially overlapped by the embossing electrode 12 '. When the press is closed, the pad 30 is exposed to the high frequency voltage from the generator 26, thereby producing the embossed pattern effect shown in FIG. 4 is shown. For this purpose, the embossing electrode can be provided with corresponding embossing strips.

Bei der Anordnung nach F i g. 2 wird die metallisierte Oberfläche 32 in der Wirkung zu einem Teil der Prägeelektrode 12' mit annähernd der gleichen Spannung. Falls die Gegenelektrode 22' fortgelassen würde, würde als Ergebnis eine elektrische Lichtbogenbildung an den Kanten des Polsters 30, entlang den Linien 34, entstehen. Durch die Gegenelektrode 22' in der gezeigten Anordnung werden die Kanten von der Elektrode 18' genügend weit wegbewegt, so daß eine Lichtbogenbildung bei den angewendeten Spannungen nicht auftritt. Wie in F i g. 1 sind die Ecken der Prägeelektrode 12' und der Gegenelektrode 22' abgerundet, und die Gegenelektrode 22' ist kleiner als die Prägeelektrode 12', um das elektrische Feld längs der Linien 36 einwärts zu ziehen und somit die Luftstrecke der Feldlinien zu verlängern.In the arrangement according to FIG. 2, the metallized surface 32 effectively becomes part of the embossing electrode 12 'with approximately the same voltage. If the counter electrode 22 'were omitted, electrical arcing would result at the edges of the pad 30, along the lines 34 . The counter-electrode 22 'in the arrangement shown moves the edges sufficiently far away from the electrode 18' so that arcing does not occur at the voltages used. As in Fig. 1, the corners of the embossing electrode 12 'and the counter electrode 22' are rounded, and the counter electrode 22 ' is smaller than the embossing electrode 12' in order to draw the electric field inwards along the lines 36 and thus to lengthen the air gap of the field lines.

Claims (6)

Patentansprüche: 1. Vorrichtung zum Prägen eines Musters auf ein dielektrisches Plattenmaterial mit einer Prägeelektrode und einer Gegenelektrode, zwischen denen das zu prägende Material gepreßt wird und zwischen denen ein elektrisches Hochfrequenzfeld besteht, durch das das zu prägende Material erwärmt wird, d a d u r c h g e k e n n -z e i c h n e t, daß wenigstens eine der beiden Elektroden in beiden Richtungen parallel zum dielektrischen Plattenmaterial geringere Abmessungen hat als dieses. Claims: 1. Device for embossing a pattern on a dielectric Plate material with an embossing electrode and a counter electrode between which the material to be embossed is pressed and between them a high-frequency electric field consists, through which the material to be embossed is heated, d u r c h g e k e n n -z e i c h n e t that at least one of the two electrodes in both directions parallel to the dielectric plate material has smaller dimensions than this. 2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Gegenelektrode (22, 22') geringere Abmessungen hat als das zu prägende dielektrische Plattenmaterial (10, 30). 2. Device according to claim 1, characterized in that the counter electrode (22, 22 ') has smaller dimensions than the dielectric plate material to be embossed (10, 30). 3. Vorrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß der eine Pol des Hochfrequenzgenerators an die Prägeelektrode, der andere an die Gegenelektrode angeschlossen ist. 3. Apparatus according to claim 1 or 2, characterized in that one pole of the high-frequency generator to the embossing electrode, the other to the Counter electrode is connected. 4. Vorrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Gegenelektrode mit ihrer der Prägeelektrode abgewandten Seite auf einer federnden Platte (20) aufliegt, die den Druck aufnimmt und ausgleicht. 4. Apparatus according to claim 1 or 2, characterized in that the counter electrode rests with its side facing away from the embossing electrode on a resilient plate (20) which absorbs and compensates for the pressure. 5. Vorrichtung nach Anspruch 4, dadurch gekennzeichnet, daß die federnde Platte (20) aus isolierendem Material besteht und in beiden Richtungen parallel zur Gegenelektrode von größeren Abmessungen ist als diese, daß eine weitere Platte (24) aus federndem isolierendem Material zwischen dem zu prägenden dielektrischen Plattenmaterial und der Gegenelektrode eingefügt ist, mit den Rändern über die Gegenelektrode hinausreicht und auf der erstgenannten federnden Platte (20) aufliegt und daß schließlich der eine Pol des Hochfrequenzgenerators an die Prägeelektrode, der andere an eine dritte Elektrode angeschlossen ist, welche auf der der Gegenelektrode abgewandten Seite der ersten federnden Platte (20) angebracht ist. 5. Apparatus according to claim 4, characterized in that the resilient plate (20) consists of insulating material and is parallel to the counter electrode in both directions of larger dimensions than this, that a further plate (24) made of resilient insulating material between the to be embossed dielectric plate material and the counter electrode is inserted, extends with the edges beyond the counter electrode and rests on the first-mentioned resilient plate (20) and that finally one pole of the high-frequency generator is connected to the embossing electrode, the other is connected to a third electrode, which is on the Counter electrode facing away from the first resilient plate (20) is attached. 6. Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die einander gegenüberliegenden Kanten der Elektroden abgerundet sind.6. Device according to one of the preceding claims, characterized in that the one another opposite edges of the electrodes are rounded.
DEG22963A 1956-10-04 1957-09-19 Apparatus for embossing a pattern on a dielectric sheet material Pending DE1295113B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US61390656 US2920172A (en) 1956-10-04 1956-10-04 Dielectric heating and pressing die structure

Publications (1)

Publication Number Publication Date
DE1295113B true DE1295113B (en) 1969-05-14

Family

ID=24459146

Family Applications (1)

Application Number Title Priority Date Filing Date
DEG22963A Pending DE1295113B (en) 1956-10-04 1957-09-19 Apparatus for embossing a pattern on a dielectric sheet material

Country Status (2)

Country Link
US (1) US2920172A (en)
DE (1) DE1295113B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0061927A1 (en) * 1981-03-30 1982-10-06 E.I. Du Pont De Nemours And Company Composite structure of an aromatic polyamide fabric coated with a fluorosilicone rubber

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3368692A (en) * 1964-01-20 1968-02-13 Coniker Entpr Inc Pleated pocket forming method
US3892505A (en) * 1968-07-23 1975-07-01 Cebal Gp Means for heating a mold
US3671709A (en) * 1970-09-14 1972-06-20 Monsanto Co Heat sealing of porous materials
US4308223A (en) * 1980-03-24 1981-12-29 Albany International Corp. Method for producing electret fibers for enhancement of submicron aerosol filtration
US4380519A (en) * 1981-03-30 1983-04-19 E. I. Du Pont De Nemours And Company Process for embossing polymeric substrates by using a composite structure of an aromatic polyamide fabric coated with a fluorosilicone rubber
CH675097A5 (en) * 1988-03-28 1990-08-31 De La Rue Giori Sa
US5139407A (en) * 1989-09-01 1992-08-18 General Electric Company Apparatus for reducing thermoplastic material compression mold cycle time
ATE168777T1 (en) * 1990-10-12 1998-08-15 Keith Watson MOISTURE AND SALINITY SENSOR AND METHOD OF USE
US5122043A (en) * 1990-12-06 1992-06-16 Matthews M Dean Electric pulsed power vacuum press
US5223684A (en) * 1991-05-06 1993-06-29 Ford Motor Company Method and apparatus for dielectrically heating an adhesive
JP2017045714A (en) * 2015-08-28 2017-03-02 東洋製罐グループホールディングス株式会社 High frequency dielectric heating method
AU2017345621B2 (en) 2016-10-20 2023-04-13 Baxter Healthcare Sa Sealing die with chamfered edge

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB577720A (en) * 1944-04-22 1946-05-29 British Insulated Cables Ltd Improvements relating to apparatus for heating insulating material by subjecting it to a high frequency field of electric force
GB629371A (en) * 1946-06-21 1949-09-19 Armstrong Cork Co Improvements in or relating to dielectric heating
US2526697A (en) * 1946-06-21 1950-10-24 Armstrong Cork Co Dielectric heating method and apparatus
DE854404C (en) * 1948-02-26 1952-11-04 Csf Process and device for the production of objects from thermoplastic or thermosetting materials
DE866372C (en) * 1951-03-18 1953-02-09 Lorenz C Ag Arrangement for welding thermoplastic foils
DE896247C (en) * 1945-03-30 1953-11-09 Siemens Ag Arrangement for heating insulating bodies in an alternating electrical field, in particular for vulcanizing rubber

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1806846A (en) * 1931-05-26 Vania
US1997263A (en) * 1928-07-04 1935-04-09 Telefunken Gmbh Method of manufacturing thin dielectric materials for high potential work
GB577719A (en) * 1944-04-22 1946-05-29 British Insulated Cables Ltd Improvements relating to apparatus for heating insulating material by subjecting it to a high frequency field of electric force
US2526699A (en) * 1946-06-21 1950-10-24 Armstrong Cork Co Method of compensating for or preventing heat losses from material during dielectric heating thereof
US2595502A (en) * 1946-08-01 1952-05-06 Allis Chalmers Mfg Co Variable capacity circuit for dielectric heating apparatus
GB621514A (en) * 1946-09-18 1949-04-11 British Insulated Callenders Improvements in or relating to bags for bag moulding
US2536316A (en) * 1949-05-03 1951-01-02 Art Electrotype Company Method of making electrotype molds
US2578209A (en) * 1949-11-30 1951-12-11 Art Electrotype Company Method of making molds for electrotypes

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB577720A (en) * 1944-04-22 1946-05-29 British Insulated Cables Ltd Improvements relating to apparatus for heating insulating material by subjecting it to a high frequency field of electric force
DE896247C (en) * 1945-03-30 1953-11-09 Siemens Ag Arrangement for heating insulating bodies in an alternating electrical field, in particular for vulcanizing rubber
GB629371A (en) * 1946-06-21 1949-09-19 Armstrong Cork Co Improvements in or relating to dielectric heating
US2526697A (en) * 1946-06-21 1950-10-24 Armstrong Cork Co Dielectric heating method and apparatus
DE854404C (en) * 1948-02-26 1952-11-04 Csf Process and device for the production of objects from thermoplastic or thermosetting materials
DE866372C (en) * 1951-03-18 1953-02-09 Lorenz C Ag Arrangement for welding thermoplastic foils

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0061927A1 (en) * 1981-03-30 1982-10-06 E.I. Du Pont De Nemours And Company Composite structure of an aromatic polyamide fabric coated with a fluorosilicone rubber

Also Published As

Publication number Publication date
US2920172A (en) 1960-01-05

Similar Documents

Publication Publication Date Title
DE69121899T2 (en) SELF-SYMMETRIC BIPOLAR AIR IONIZER
DE587309C (en) Method and arrangement for driving devices which utilize the electrostatic attraction force occurring between the contact surfaces when electrical current passes through an assembly consisting of a semiconductor and a semiconductor or conductor that touches the same
DE2753750C2 (en) Device for the surface treatment of foil webs by means of electrical corona discharge
DE1295113B (en) Apparatus for embossing a pattern on a dielectric sheet material
DE2644978B2 (en) Device for the production of ozone
DE2224081A1 (en) Device for performing RF processing operations
DE3146826C2 (en)
DE2502524C3 (en) Method and device for the thermal treatment of objects by means of a high-frequency electric field and press for the production of objects from laminated wood
DE578225C (en) Deionization device for extinguishing alternating current arcs
DE699600C (en) Process for drying sheets and foils, for example made of wood, by means of high-frequency electrical fields
CH449943A (en) Process for the treatment of the surfaces of materials and device for carrying out the process
DE3700232A1 (en) Device for treating surfaces
DE2101283C3 (en) Method and apparatus for the production of synthetic crystals
DE965664C (en) Recording device, in particular for recording sea depths
DE944446C (en) Device for dielectric welding of non-conductive materials in a high frequency field
DE1764699C (en) Method for adjusting thin-film capacitors and device for carrying out this method
DE2363284A1 (en) Ionisation device with voltage source - has corona discharge plasma source with discharge paths for free charge carriers
CH574176A5 (en)
DE977542C (en) Selenium rectifier with pressure trapping layer
DE2302190C3 (en) Method and device for coating metallized insulating foils, in particular capacitor foils, in a continuous process
DE885830C (en) Method and arrangement for drying fibrous bodies
DE2724975C2 (en) Method and device for equipotential bonding of the surfaces of electrically non-conductive or poorly conductive materials
DE1789079C (en) Device for generating an arc plasma of high temperature precipitation from 1440594
DE1604508C (en) Device for treating the surface of plastic bodies by means of electrical discharge
DE2725005A1 (en) Ionisation treatment of plastic film surface - where screen of equal polarity and potential reflects additional ions through window