DE2952732C2 - - Google Patents

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Publication number
DE2952732C2
DE2952732C2 DE2952732A DE2952732A DE2952732C2 DE 2952732 C2 DE2952732 C2 DE 2952732C2 DE 2952732 A DE2952732 A DE 2952732A DE 2952732 A DE2952732 A DE 2952732A DE 2952732 C2 DE2952732 C2 DE 2952732C2
Authority
DE
Germany
Prior art keywords
nozzle
electrode
film
foils
ozone
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.)
Expired
Application number
DE2952732A
Other languages
German (de)
Other versions
DE2952732A1 (en
Inventor
Karl Heinz Dr. 4802 Halle De Sengewald
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.)
SENGEWALD VERPACKUNGEN GMBH, 33790 HALLE, DE
Original Assignee
Karl Heinz Dr. 4802 Halle De Sengewald
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 Karl Heinz Dr. 4802 Halle De Sengewald filed Critical Karl Heinz Dr. 4802 Halle De Sengewald
Priority to DE19792952732 priority Critical patent/DE2952732A1/en
Publication of DE2952732A1 publication Critical patent/DE2952732A1/en
Application granted granted Critical
Publication of DE2952732C2 publication Critical patent/DE2952732C2/de
Granted legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/14—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers
    • B32B37/15—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers with at least one layer being manufactured and immediately laminated before reaching its stable state, e.g. in which a layer is extruded and laminated while in semi-molten state
    • B32B37/153—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers with at least one layer being manufactured and immediately laminated before reaching its stable state, e.g. in which a layer is extruded and laminated while in semi-molten state at least one layer is extruded and immediately laminated while in semi-molten state
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/001—Combinations of extrusion moulding with other shaping operations
    • B29C48/0013—Extrusion moulding in several steps, i.e. components merging outside the die
    • B29C48/0014—Extrusion moulding in several steps, i.e. components merging outside the die producing flat articles having components brought in contact outside the extrusion die
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/16—Articles comprising two or more components, e.g. co-extruded layers
    • B29C48/18—Articles comprising two or more components, e.g. co-extruded layers the components being layers
    • B29C48/21—Articles comprising two or more components, e.g. co-extruded layers the components being layers the layers being joined at their surfaces
    • 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
    • B29C59/10—Surface shaping of articles, e.g. embossing; Apparatus therefor by electric discharge treatment
    • 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
    • B29C65/022—Particular heating or welding methods not otherwise provided for
    • B29C65/028—Particular heating or welding methods not otherwise provided for making use of inherent heat, i.e. the heat for the joining comes from the moulding process of 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
    • 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
    • B29C66/02—Preparation of the material, in the area to be joined, prior to joining or welding
    • 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
    • B29C66/02—Preparation of the material, in the area to be joined, prior to joining or welding
    • B29C66/028—Non-mechanical surface pre-treatments, i.e. by flame treatment, electric discharge treatment, plasma treatment, wave energy or particle 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
    • 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
    • B29C66/45—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
    • B29C66/73—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
    • B29C66/83—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
    • 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
    • B29C66/83415—Roller, cylinder or drum types the contact angle between said rollers, cylinders or drums and said parts to be joined being a non-zero angle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B38/00—Ancillary operations in connection with laminating processes
    • B32B38/0008—Electrical discharge treatment, e.g. corona, plasma treatment; wave energy or particle 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/07—Flat, e.g. panels
    • B29C48/08—Flat, e.g. panels flexible, e.g. films
    • 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
    • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2310/00—Treatment by energy or chemical effects
    • B32B2310/14—Corona, ionisation, electrical discharge, plasma treatment

Description

Die Erfindung betrifft eine Vorrichtung zum Verblocken von zwei Folien nach dem Oberbegriff des Patentan­ spruchs 1.The invention relates to a device for blocking of two films according to the preamble of the patent saying 1.

Es ist bekannt, in unmittelbarem Anschluß an die Extrusion zwei Folienlagen in warmplastischem Zustand zu verblocken, wobei unter Verblocken die Verbindung der beiden Folienlagen zu verstehen ist. Gleichartige Materialien lassen sich thermisch verblocken, weil sich ihre Oberflächen einander verbinden. Ihre Verblockung geschieht in der Weise, daß noch in der Düse an deren Ausgang die beiden erhitzten Folienlagen zusammenge­ führt werden.It is known in close connection to the Extrusion of two layers of film in a warm plastic state to block, while blocking the connection of the two layers of film is to be understood. Like Materials can be thermally blocked because their surfaces connect to each other. Your blocking happens in such a way that still in the nozzle at their Exit the two heated foil layers together leads.

Das Verblocken von verschiedenartigen Materialien macht jedoch große Schwierigkeiten, weil wegen der nicht adhäsiven Oberflächen durch thermische Verblockung al­ leine keine haftende Verbindung der Folien unterein­ ander zu erreichen ist. The blocking of different materials makes however great difficulty because of not adhesive surfaces due to thermal blocking al no adhesive connection between the foils others can be reached.  

Um eine Bedruckung einer Folie zu ermöglichen, wird nach einer bekannten Arbeitsweise in unmittelbarem An­ schluß an die Schlitzdüse in dem die Folie umgebenden Raum eine Ozonbehandlung der Folie durchgeführt (DE-AS 10 34 853). Dabei wird die Fähigkeit des Ozons als sehr starkes Oxydans genutzt. Das Ozon wird anschließend aus dem Raum abgesaugt. Nachteilig ist jedoch der Preis sowie die Tatsache, daß Ozon ein äußerst giftiges Gas ist.To enable printing on a film, according to a known way of working in the immediate vicinity close to the slot nozzle in the surrounding the film Room an ozone treatment of the film is carried out (DE-AS 10 34 853). The ability of ozone to be very strong oxydans used. The ozone is then turned off vacuumed the room. The disadvantage is the price as well as the fact that ozone is an extremely toxic gas is.

Eine bekannte Vorrichtung, von der der Oberbegriff des Patentanspruchs 1 ausgeht (DE-AS 24 60 432), weist mindestens eine Kühlwalze auf, auf die die aus einer Flachdüse austretende Folienbahn im plastifizierten Zustand aufläuft. Unmittelbar vor dem Auflaufen der Folienbahn auf die Kühlwalze oder dem Zusammenführen der Verbundwerkstoffe wird eine Korona-Entladung vor­ genommen, um die an der Kühlwalze anhaftende Luft­ schicht von dem Spalt zwischen Folie und Kühlwalze fernzuhalten und Lufteinschlüsse zu verhindern. Die Korona-Entladung wird zwischen einer Hochspannungselek­ trode und der geerdeten Kühlwalze erzeugt. Sofern mehrere Folien miteinander verbunden werden sollen, laufen beide Folien über verschiedene Walzen, die einen Walzenspalt bilden, wobei als Verbundwerkstoff eine dritte Folie zwischen die zu verbindenden Hauptfolien geführt wird.A known device, of which the preamble of Claim 1 goes out (DE-AS 24 60 432) has at least one cooling roll on which the from a Flat sheet emerging in the plasticized Condition is running up. Immediately before the emergence of the Film web on the chill roll or merging of the composite materials becomes a corona discharge taken to the air adhering to the cooling roller layer from the gap between film and chill roll keep away and prevent air pockets. The Corona discharge occurs between a high voltage electr trode and the grounded cooling roller. Provided several foils are to be joined together, both films run over different rollers, one Form nip, with a as a composite third film between the main films to be joined to be led.

Der Erfindung liegt die Aufgabe zugrunde, das Ver­ blocken von Folien aus gleichartigen Materialien zu vereinfachen und eine Vorrichtung zu schaffen, mit der eine Verbundfolie mit guter Haftung der beiden Folien­ bahnen auf einfache Weise hergestellt werden kann. The invention is based, Ver block foils from similar materials simplify and create a device with which a composite film with good adhesion of the two films can be produced in a simple manner.  

Die Lösung dieser Aufgabe erfolgt erfindungsgemäß mit den im kennzeichnenden Teil des Patentanspruchs 1 an­ gegebenen Merkmalen.This object is achieved with the invention in the characterizing part of claim 1 given characteristics.

Mit der erfindungsgemäßen Vorrichtung wird eine ein­ fache Verbindung von an sich nicht adhäsiven Kunst­ stoffen bei der Koextrusion erreicht. Dabei wird der Umstand ausgenutzt, daß eine Korona-Entladung in Ver­ bindung mit den nahezu schmelzflüssigen, aus der Mehr­ schichtdüse austretenden Folien zu einer sehr starken Aufrauhung der Oberflächen beider Folien führt, was Grundlage für die Verblockung nicht gleichartiger Kunststoffe ist. Die Anordnung der Elektrode unmittel­ bar an der Düse hat den Vorteil, daß die Aufrauhung der Folien unmittelbar nach deren Entstehung erfolgt und daß ein geringer Energieaufwand erforderlich ist. Ferner werden beide Folien gleichzeitig einer Behand­ lung durch dieselbe Korona-Entladung ausgesetzt, ohne daß eine Zusammenführung über verschiedene Umlenkwalzen erfolgen müßte. Es ergibt sich somit ein sehr einfacher Führungsverlauf der zu verbindenden Folienbahnen.With the device according to the invention, a multiple connection of non-adhesive art substances achieved during coextrusion. The Exploited the fact that a corona discharge in Ver bond with the almost molten, from the more layer nozzle emerging foils to a very strong Roughening the surfaces of both foils leads to what Basis for the blocking of non-uniform Is plastics. The arrangement of the electrode immediately bar on the nozzle has the advantage that the roughening of the Slides are made immediately after they are created and that a small amount of energy is required. Furthermore, both foils are treated simultaneously exposed to the same corona discharge without that a merge over different deflecting rollers should be done. The result is a very simple one Guide path of the film webs to be connected.

Mit der erfindungsgemäßen Vorrichtung ist es möglich, zwei verschiedenartige Folien miteinander zu verbinden oder auch einen Blasfolienschlauch flachzulegen und dessen Umfangshälften miteinander zu verbinden.With the device according to the invention it is possible to connect two different types of film or lay a blown film tube flat and to connect the circumferential halves together.

Die Vorrichtung nach dem Anspruch 2 dient der Extrusion von zwei Schläuchen, die zu einem Verbundschlauch zu­ sammengefügt werden. Da die Korona-Entladung hierbei im wesentlichen ohne Anwesenheit von Luft erfolgt, ent­ steht wenig oder kein Ozon. The device according to claim 2 is used for extrusion of two hoses leading to a composite hose be put together. Since the corona discharge in this case occurs essentially without the presence of air, ent little or no ozone.  

Gemäß Anspruch 3 erfolgt die Abführung von Ozon, das durch die Korona-Entladung entsteht, durch die Elek­ trodenhalterung hindurch zum Düsenwerkzeug. Hierdurch wird die Vorrichtung vereinfacht.According to claim 3, the removal of ozone that created by the corona discharge, by the elec tread holder through to the nozzle tool. Hereby the device is simplified.

Im folgenden werden unter Bezugnahme auf die Zeichnung Ausführungsbeispiele der Erfindung näher erläutert.The following are with reference to the drawing Embodiments of the invention explained in more detail.

Es zeigen:Show it:

Fig. 1 eine Mehrschichtdüse mit Elektrode, Fig. 1 is a multilayer with electrode,

Fig. 2 die Elektrode nach Fig. 1 in größerem Maßstab. Fig. 2 shows the electrode of FIG. 1 on a larger scale.

Mit 10 ist eine Mehrschichtdüse dargestellt, die zwei Fließkanäle 11 und 12 hat. Aus der Mündung des Fließ­ kanals 11 tritt eine Kunststoffolie X z.B. aus Polyamid aus. Aus der Mündung des Fließkanals 12 tritt eine Kunststoffolie Y, z.B. aus Polyethylen aus. Beide Folien X und Y bestehen aus verschiedenartigen Mate­ rialien, die an sich wegen der nicht adhäsiven Ober­ flächen keine haftende Verbindung miteinander eingehen würden. Am Düsenausgang ist eine Elektrode 13 vor­ handen, die sich quer zur Bewegungsrichtung der beiden Folien X und Y erstreckt und in einem geringen Abstand zwischen beiden angeordnet ist. 10 shows a multi-layer nozzle which has two flow channels 11 and 12 . From the mouth of the flow channel 11 , a plastic film X emerges, for example from polyamide. A plastic film Y , for example made of polyethylene, emerges from the mouth of the flow channel 12 . Both films X and Y consist of different types of materials, which would not form an adhesive bond with each other because of the non-adhesive surfaces. At the nozzle outlet there is an electrode 13 which extends transversely to the direction of movement of the two foils X and Y and is arranged at a short distance between the two.

Das Maß der Aufrauhung richtet sich nach der Frequenz. Zweckmäßig sind Frequenzen zwischen 7 und 40 KHz.The degree of roughening depends on the frequency. Frequencies between 7 and 40 kHz are expedient.

Die Elektrode ist von einer Halterung 14, 14 a aus zwei Blechen getragen, die an der Mehrschichtdüse befestigt sein können, aber nach dem Ausführungsbeispiel nicht sein müssen, weil dort die Mehrschichtdüse zwei auf gerader Linie angeordnete Düsenauslaßschlitze hat und somit die Befestigung der Bleche zu beiden Seiten außerhalb der beiden Flachbahnen erfolgen kann. Die Bleche der Halterung 14, 14 a sind mit Bohrungen oder dergleichen Durchbrüchen 15 versehen, damit sie zugleich einen Kanal zum Absaugen des durch die Korona-Entladung entstehenden Ozons bilden, das durch Anwendung von Unterdruck abgesogen wird.The electrode is carried by a holder 14 , 14 a from two sheets, which can be attached to the multi-layer nozzle, but do not have to be according to the embodiment, because there the multi-layer nozzle has two nozzle outlet slots arranged in a straight line and thus the fastening of the sheets to both Pages can be done outside of the two flat webs. The sheets of the holder 14 , 14 a are provided with holes or the like openings 15 so that they also form a channel for sucking out the ozone produced by the corona discharge, which is drawn off by applying negative pressure.

Sofern, wie in Fig. 2 ebenfalls dargestellt, die Mehr­ schichtdüse einen Ring zum Blasen von zwei Schläuchen ist, dann ist in dieser eine Bohrung 16 zum Absaugen etwa entstehenden Ozons vorhanden.If, as also shown in Fig. 2, the multi-layer nozzle is a ring for blowing two hoses, then there is a bore 16 in this for suctioning off any ozone that is formed.

Die beiden Folien X, Y werden zwischen zwei Walzen 17 und 18, die auf die beiden Folien einen Zug ausüben und in angegebenen Pfeilrichtungen 19 und 20 rotieren, zur Anlage gebracht und abgezogen.The two foils X , Y are brought into contact and drawn off between two rollers 17 and 18 , which exert a pull on the two foils and rotate in the indicated arrow directions 19 and 20 .

Claims (3)

1. Vorrichtung zum Verblocken von zwei Folien, wobei mindestens eine aus einem Kunststoff in thermo­ plastischem Zustand besteht, mit einer Düse für die Extrusion des thermoplastischen Kunststoffs und einer Elektrode an der Düse zur Erzeugung einer Korona-Entladung, dadurch gekennzeichnet, daß die Düse als Mehrschichtdüse (10) ausgebildet ist und die Elektrode (13) zwischen den Mündungen zweier Fließkanäle (11, 12) unmittelbar an der Düse (10) angeordnet ist.1. Device for blocking two foils, at least one consisting of a plastic in a thermoplastic state, with a nozzle for the extrusion of the thermoplastic and an electrode on the nozzle for generating a corona discharge, characterized in that the nozzle as multilayer (10) is formed and the electrode (13) between the mouths of two flow channels (11, 12) is arranged directly at the nozzle (10). 2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Mehrschichtdüse zu einem Ring geschlossen ist und die Elektrode (13) in dem Ringspalt zwischen den entstehenden Schläuchen angeordnet ist.2. Device according to claim 1, characterized in that the multi-layer nozzle is closed to form a ring and the electrode ( 13 ) is arranged in the annular gap between the hoses formed. 3. Vorrichtung nach Anspruch 1 oder 2, dadurch gekenn­ zeichnet, daß die Elektrode (13) mit einer Halterung (14,14 a) versehen ist, die als Abführleitung für das entstandene Ozon ausgebildet ist.3. Device according to claim 1 or 2, characterized in that the electrode is provided (13) with a holder (14,14 a), which is designed as a discharge pipe for the ozone produced.
DE19792952732 1979-12-29 1979-12-29 Bonding together dissimilar thermoplastic films - by corona discharge immediately below extruder nozzle before combining with pressure rollers Granted DE2952732A1 (en)

Priority Applications (1)

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DE19792952732 DE2952732A1 (en) 1979-12-29 1979-12-29 Bonding together dissimilar thermoplastic films - by corona discharge immediately below extruder nozzle before combining with pressure rollers

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Application Number Priority Date Filing Date Title
DE19792952732 DE2952732A1 (en) 1979-12-29 1979-12-29 Bonding together dissimilar thermoplastic films - by corona discharge immediately below extruder nozzle before combining with pressure rollers

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DE2952732A1 DE2952732A1 (en) 1981-07-02
DE2952732C2 true DE2952732C2 (en) 1989-03-09

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Publication number Priority date Publication date Assignee Title
DE3481041D1 (en) * 1983-05-31 1990-02-22 Idemitsu Petrochemical Co METHOD FOR TREATING THERMOPLASTIC PLASTIC.
DE3328596C2 (en) * 1983-08-08 1985-10-03 Klepper Beteiligungs Gmbh & Co Bootsbau Kg, 8200 Rosenheim Shell body for a water sports vehicle and manufacturing process
EP0227293A3 (en) * 1985-12-05 1988-02-03 General Binding Corporation Method for laminating
DE3906390C2 (en) * 1989-03-01 1997-06-05 Lemo Maschb Gmbh Process for manufacturing and stacking plastic bags
WO1991011750A1 (en) * 1990-02-01 1991-08-08 Eastman Kodak Company Photographic element containing thin transparent magnetic recording layer and method for the preparation thereof

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DE1034853B (en) * 1952-11-29 1958-07-24 Du Pont Process for making films and tubular structures made of ethylene polymers or their copolymers printable
DE2460432C3 (en) * 1974-12-20 1984-01-05 Klaus 4803 Steinhagen Kalwar Process for the continuous production of a flat film web from thermoplastic material or of two- or three-layer, web-shaped composite materials and device for the production of two-layer, web-shaped composite materials

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Publication number Publication date
DE2952732A1 (en) 1981-07-02

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