CH627492A5 - Process and device for producing self-adhesive cover films and insulating films - Google Patents

Process and device for producing self-adhesive cover films and insulating films Download PDF

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Publication number
CH627492A5
CH627492A5 CH797076A CH797076A CH627492A5 CH 627492 A5 CH627492 A5 CH 627492A5 CH 797076 A CH797076 A CH 797076A CH 797076 A CH797076 A CH 797076A CH 627492 A5 CH627492 A5 CH 627492A5
Authority
CH
Switzerland
Prior art keywords
adhesive
web
self
crosslinkable
tubular film
Prior art date
Application number
CH797076A
Other languages
German (de)
Inventor
Heinrich Dr Beck
Heinrich Schaeperklaus
Fritz Konermann
Hartmut Upmeier
Werner-Josef Zimmermann
Original Assignee
Bischof & Klein
Windmoeller & Hoelscher
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 Bischof & Klein, Windmoeller & Hoelscher filed Critical Bischof & Klein
Publication of CH627492A5 publication Critical patent/CH627492A5/en

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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
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B17/00—Recovery of plastics or other constituents of waste material containing plastics
    • B29B17/0005—Direct recuperation and re-use of scrap material during moulding operation, i.e. feed-back of used material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • 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
    • B29C48/09—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels
    • 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
    • B29C48/09—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels
    • B29C48/10—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels flexible, e.g. blown foils
    • 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
    • B29C48/14—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the particular extruding conditions, e.g. in a modified atmosphere or by using vibration
    • B29C48/147—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the particular extruding conditions, e.g. in a modified atmosphere or by using vibration after the die nozzle
    • B29C48/1472—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the particular extruding conditions, e.g. in a modified atmosphere or by using vibration after the die nozzle at the die nozzle exit zone
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/30—Extrusion nozzles or dies
    • B29C48/305—Extrusion nozzles or dies having a wide opening, e.g. for forming sheets
    • B29C48/307—Extrusion nozzles or dies having a wide opening, e.g. for forming sheets specially adapted for bringing together components, e.g. melts within the 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
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/30—Extrusion nozzles or dies
    • B29C48/32—Extrusion nozzles or dies with annular openings, e.g. for forming tubular articles
    • B29C48/335—Multiple annular extrusion nozzles in coaxial arrangement, e.g. for making multi-layered tubular articles
    • B29C48/337—Multiple annular extrusion nozzles in coaxial arrangement, e.g. for making multi-layered tubular articles the components merging at a common location
    • 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
    • B29C2791/00—Shaping characteristics in general
    • B29C2791/004—Shaping under special conditions
    • B29C2791/007—Using fluid under pressure
    • 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
    • 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/50—Reuse, recycling or recovery technologies
    • Y02W30/62—Plastics recycling; Rubber recycling

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Environmental & Geological Engineering (AREA)
  • Laminated Bodies (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)

Description

Die Erfindung betrifft ein Verfahren zur Herstellung von selbstklebenden Abdeck- und Isolierfolien mit einem Träger aus thermoplastischem Material und einer Klebeschicht aus nicht vernetzbarem, lösungsmittelfreiem elastomerem Material sowie eine Vorrichtung zur Durchführung dieses Verfahrens. The invention relates to a method for producing self-adhesive cover and insulating films with a carrier made of thermoplastic material and an adhesive layer made of non-crosslinkable, solvent-free elastomeric material, and a device for carrying out this method.

In vielen Bereichen des täglichen Lebens, auf Baustellen sowie bei der industriellen Produktion werden im grossen Masse selbstklebende Bänder zum Abdichten, Zusammenfügen und zum Isolieren gegen Feuchtigkeit oder Elektrizität benötigt. Die eigentlichen Bänder können aus den verschiedensten Materialien bestehen, beispielsweise aus tragenden Geweben, thermoplastischen Folien, die gegebenenfalls gereckt sein können, Fadengelegen oder Metallbändern. In many areas of daily life, on construction sites as well as in industrial production, self-adhesive tapes are required to a large extent for sealing, assembling and insulating against moisture or electricity. The actual tapes can be made from a wide variety of materials, for example from load-bearing fabrics, thermoplastic films, which can optionally be stretched, thread beds or metal tapes.

Zur Herstellung von selbstklebenden Folien und Bändern ist es bekannt, auf das Trägerband aus der Lösung un-vernetzte bzw. nicht vernetzbare Natur- oder Kunstkautschuke (Elastomere) aufzutragen, das Lösungsmittel abzu-dunsten und das so erhaltene Band für den Versand und die weitere Verwendung aufzurollen. Durch das Mastizieren, d.h. einen gezielten Molekül-Abbau, wird das verwendete Elastomer klebriger eingestellt und gegebenenfalls durch Zusatz von anderen Harzen modifiziert. Die Verwendung von Lösungsmitteln hat bei den bekannten Verfahren zur Herstellung von Klebebändern erhebliche Nachteile zur Folge. Die mit Lösungsmitteln aufgetragene Schicht aus un-vernetzten oder unvernetzbaren Elastomeren besteht üblicherweise etwa zu 70% aus Lösungsmitteln, die abgedampft werden müssen. Das Abdampfen bedingt nicht nur einen erhöhten maschinellen Aufwand, es führt auch zu einer Brandgefahr und kann eine Umweltverschmutzung zur Folge haben. Ein weiterer Nachteil des Verfahrens der Herstellung von Klebebändern aus dem Lösungsmittel besteht in der 5 geringen Verarbeitungsgeschwindigkeit, die durch die erforderliche lange Abdunstungszeit für das Lösungsmittel vorgegeben ist. Hierdurch sind Leistungssteigerangen bei der Herstellung vom Prinzip her ausgeschlossen, so dass ein verhältnismässig hoher Preis für die nach dem bekannten Ve'r-10 fahren hergestellten Klebebänder die Folge ist. For the production of self-adhesive films and tapes, it is known to apply non-cross-linked or non-cross-linkable natural or synthetic rubbers (elastomers) to the carrier tape from the solution, to evaporate the solvent and the tape thus obtained for shipping and further use roll up. By masticating, i.e. a targeted molecule breakdown, the elastomer used is made more sticky and modified if necessary by adding other resins. The use of solvents has considerable disadvantages in the known methods for producing adhesive tapes. The layer of non-cross-linked or non-cross-linkable elastomers applied with solvents usually consists of approximately 70% solvents that have to be evaporated. Evaporation not only requires increased mechanical effort, it also creates a fire hazard and can result in environmental pollution. Another disadvantage of the process for producing adhesive tapes from the solvent is the low processing speed, which is determined by the long evaporation time required for the solvent. As a result, performance increases in production are excluded in principle, so that the result is a relatively high price for the adhesive tapes produced according to the known Ve'r-10 method.

Aufgabe der Erfindung ist es, zur Vermeidung der aufgezeigten Nachteile ein Verfahren zur Herstellung von selbstklebenden Abdeck- und Isolierfolien zu schaffen, bei dem die selbstklebende Schicht nicht aus dem Lösungsmittel auf-15 getragen werden muss. The object of the invention is to create a method for the production of self-adhesive cover and insulating films in order to avoid the disadvantages shown, in which the self-adhesive layer does not have to be applied from the solvent.

Diese Aufgabe wird bei einem Verfahren der eingangs beschriebenen Art erfindungsgemäss dadurch gelöst, dass die Trägerbahn aus thermoplastischem Material und die Klebeschicht aus nicht vernetzbarem, elastomerem Material aus 20 einer Zweischichtdüse koextrudiert, abgekühlt und aufgewickelt werden. This object is achieved according to the invention in a method of the type described in the introduction in that the carrier web made of thermoplastic material and the adhesive layer made of non-crosslinkable, elastomeric material are coextruded, cooled and wound up from a two-layer nozzle.

Durch das erfindungsgemässe Verfahren lassen sich selbstklebende Abdeck- und Isolierfolien auf einfache und in wirtschaftlicher Weise herstellen, so dass das Anwendungs-25 gebiet der Folien erweitert werden kann. Beispielsweise lassen sich die erfindungsgemässen Folien zur Isolierung von Bauwerken verwenden, wozu bisher überwiegend andere Materialien eingesetzt wurden. The process according to the invention makes it possible to produce self-adhesive covering and insulating films in a simple and economical manner, so that the field of application of the films can be expanded. For example, the foils according to the invention can be used for the insulation of buildings, for which mainly other materials have hitherto been used.

Die erfindungsgemässe Vorrichtung zur Durchführung 30 des Verfahrens ist dadurch gekennzeichnet, dass zur Extru-sion der Trägerbahn aus dem thermoplastischen Material und der Selbstklebeschicht aus nicht vernetzbarem, elastomerem Material eine Zweischichtringspaltdüse vorgesehen ist, dass in Folienlaufrichtung nacheinander eine Flachlege-35 einrichtung und eine Abzugseinrichtung für die flachgelegte und abgekühlte Schlauchfolie angeordnet sind, dass zur Trennung der Schlauchfolienbahn in zwei Einzelbahnen Trennmesser in die Schlauchfolienbahn eingreifen, und dass zur Aufwicklung der Einzelbahnen Aufwickeleinrichtungen 40 vorhanden sind. The device according to the invention for carrying out the method 30 is characterized in that a two-layer ring gap nozzle is provided for the extrusion of the carrier web from the thermoplastic material and the self-adhesive layer from non-crosslinkable, elastomeric material, that a lay-up device and a take-off device for one after the other in the film running direction the flat and cooled tubular film are arranged such that separating knives engage in the tubular film web to separate the tubular film web into two individual webs, and that winding devices 40 are provided for winding up the single webs.

Ausführungsbeispiele der Erfindung werden nachstehend anhand der Zeichnung näher erläutert. In dieser zeigt: Embodiments of the invention are explained in more detail below with reference to the drawing. In this shows:

Fig. 1 eine schematische Darstellung einer Zweischicht-Folienblasanlage mit der thermoplastischen Trägerbahn auf 45 der Schlauchfolieninnenseite und der nicht vernetzbaren elastomeren Klebeschicht auf der Schlauchfolienaussenseite und Fig. 1 is a schematic representation of a two-layer film blowing system with the thermoplastic carrier web on the inside of the tubular film and the non-crosslinkable elastomeric adhesive layer on the outside of the tubular film and

Fig. 2 eine schematische Darstellung einer der in Fig. 1 dargestellten Anlage entsprechenden Anlage mit der ther-50 moplastischen Trägerschicht auf der Schlauchfolienaussenseite und der nicht vernetzbaren elastomeren Klebeschicht auf der Schlauchfolieninnenseite. Fig. 2 is a schematic representation of a system corresponding to the system shown in Fig. 1 with the thermoplastic carrier layer on the outside of the tubular film and the non-crosslinkable elastomeric adhesive layer on the inside of the tubular film.

Das Anlagenschema nach Fig. 1 benutzt das an sich bekannte Zweischicht-Blasfolienverfahren. Die schematisch 55 angedeutete Schneckenpresse 1 fördert das plastifizierte, elastomere Material der Klebeschicht über das Anschlussstück 2 in das Gehäuse des Zweischicht-Folienblaskopfes 17 mit dem Ringkanal 17'. Das thermoplastische Material der Trägerbahn 8 wird mittels der schematisch angedeuteten 60 Schneckenpresse 14 gefördert und über das Anschlussstück 15 in den Verteilerkanal 17" des Folienblaskopfes 17 geleitet. Die austretende Zweischicht-Schlauchfolie wird zweckmässigerweise zusätzlich durch die äussere Kühlung 23 mit der an sich bekannten Innenkühlvorrichtung 19 auch von 65 der Innenseite her gekühlt, bei der die Innenkühlluft 18 durch den konzentrischen Ringkanal in die Innenkühlvorrichtung 19 geleitet wird, an den Schlitzen 20 austritt und vorteilhaft im oberen Bereich der Schlauchblase 20' mittels 1 uses the known two-layer blown film process. The screw press 1, indicated schematically 55, conveys the plasticized, elastomeric material of the adhesive layer via the connection piece 2 into the housing of the two-layer film die head 17 with the annular channel 17 '. The thermoplastic material of the carrier web 8 is conveyed by means of the schematically indicated 60 screw press 14 and passed via the connecting piece 15 into the distribution channel 17 "of the film blowing head 17. The emerging two-layer tubular film is expediently additionally cooled by the external cooling 23 with the known internal cooling device 19 also cooled from the inside, in which the internal cooling air 18 is conducted through the concentric annular channel into the internal cooling device 19, exits at the slots 20 and advantageously in the upper region of the hose bladder 20 '

3 3rd

627492 627492

des Absaugrohres 21 geleitet und als erwärmte Luft 22 durch — nicht dargestellte Absauggebläse — abgeführt wird. Die Schlauchfolienblase mit der aussenliegenden Klebeschicht kann mittels der Kalibriervorrichtung 32 auf das gewünschte Nennmass gebracht werden, wobei die Stützelemente eine abweisende Oberfläche — wie beispielsweise eine Silicon-Kautschuk-Oberfläche — aufweisen müssen, ebenso wie alle folgenden mit der Klebeschicht in Berührung kommenden Walzen 10, 24', 25 und 27. of the suction pipe 21 passed and discharged as heated air 22 through - suction fans, not shown. The tubular film bubble with the external adhesive layer can be brought to the desired nominal size by means of the calibration device 32, the support elements having to have a repellent surface - such as a silicone rubber surface - as well as all the following rollers 10 coming into contact with the adhesive layer, 24 ', 25 and 27.

Nach erfolgter Abkühlung wird der Folienschlauch 8, 9 von den Flachlege-Elementen 24 — vorzugsweise mit rollenden Flachlegewalzen 24' — und mittels des Abzugswalzenpaares 25 abgezogen, über die Leitwalzen 10 zum Wickler geführt und nach dem Auftrennen der Kanten des flachgelegten Folienschlauches 8", 9" mittels der schematisch angedeuteten Schlitzmesser 26 aufgetrennt und über das Walzenpaar 27, das vorteilhaft als angetriebenes Vorzugswalzenpaar ausgebildet ist, den beiden Wickelstellen 12', 12" zugeführt. Auch bei dieser Anordnung kann, wenn erforderlich, je eine Trennbahn 13', 13" in die Wickel 12', 12" einlaufen. After cooling, the film tube 8, 9 is removed from the flat-laying elements 24 - preferably with rolling flat-laying rollers 24 '- and by means of the pair of draw-off rollers 25, guided to the winder via the guide rollers 10 and, after the edges of the flat-lying film tube 8 ", 9 have been separated "separated by means of the schematically indicated slot knives 26 and fed to the two winding stations 12 ', 12" via the pair of rollers 27, which is advantageously designed as a driven preferred roller pair. Also in this arrangement, if necessary, a separating web 13', 13 "in the wraps 12 ', 12 "run in.

Fig. 2 stellt eine Alternative zu der vorstehend beschriebenen Zweischicht-Blasfolienanlage dar, bei der jedoch die Trägerbahn aus thermoplastischem Material 8 auf der Schlauchfolien-Aussenseite und die Klebeschicht 9 aus nicht vernetzbarem elastomerem Material auf der Schlauchfolieninnenseite liegen. Die von dem Zweischicht-Folienblaskopf 17 ausgeformte Schlauchfolie 8, 9 wird von der Innenkühlvorrichtung 19 und dem Aussenkühlring 23 gekühlt, wobei abweichend von der in Fig. 1 beschriebenen Vorrichtung in 5 an sich bekannter Weise die Innenkühlluft 20 an der Stauscheibe 29, die wiederum über die Halte-Elemente 28 mit der Innenkühlvorrichtung 19 verbunden ist, vorbeigeleitet wird, womit durch den Durchmesser der Stauscheibe 29 der Schlauchfolien-Durchmesser im Staukissen-Prinzip bestimmt io wird. Die erwärmte Innenkühlluft 22 strömt nach dem Passieren der Stauscheibe 29 ins Freie. 2 shows an alternative to the two-layer blown film system described above, but in which the carrier web made of thermoplastic material 8 is on the outside of the tubular film and the adhesive layer 9 made of non-crosslinkable elastomeric material on the inside of the film. The tubular film 8, 9 formed by the two-layer film blowing head 17 is cooled by the internal cooling device 19 and the external cooling ring 23, deviating from the device described in FIG. 1 in 5, in a manner known per se, the internal cooling air 20 on the baffle plate 29, which in turn via the holding elements 28 is connected to the internal cooling device 19, is bypassed, whereby the diameter of the baffle plate 29 determines the tubular film diameter in the baffle cushion principle. The heated internal cooling air 22 flows outside after passing through the baffle plate 29.

Nach ausreichender Abkühlung der Schlauchfolienblase wird diese durch zwei gegenüberliegende Schlitzmesser 30 aufgetrennt, über Hilfsrollen 31', 31" ausgebreitet und von den beiden Abzugswalzenpaaren 25', 25" abgezogen. Hierbei muss die auf der Klebeseite liegende Abzugswalze jeweils mit einer abweisenden Oberfläche versehen sein (Silicon-Kautschuk o.ä.). — Über weitere Leitwalzen 10, 10" wird die fertige selbstklebende Folienbahn wie in dem vorigen Beispiel den Wickelstellen 12', 12" zugeführt, wobei auch hier die Trennbahnen 13', 13" zugeführt werden können. — Diese Vorrichtung hat den Vorteil, dass weniger Leitwalzen mit der klebrigen Seite der fertigen Folienbahn in Berührung kommen, andererseits muss bei Formatumstellungen (Breitenverstellungen) jeweils die Stauscheibe 29 ausgetauscht werden. After the tubular film bubble has cooled sufficiently, it is separated by two opposing slitting knives 30, spread over auxiliary rollers 31 ', 31 "and drawn off by the two pairs of take-off rolls 25', 25". The pull-off roller on the adhesive side must be provided with a repellent surface (silicone rubber or similar). The finished self-adhesive film web is fed to the winding stations 12 ′, 12 ″ via further guide rollers 10, 10 ″, the separating webs 13 ′, 13 ″ being able to be fed here as well. This device has the advantage that less Guide rollers come into contact with the sticky side of the finished film web. On the other hand, the baffle plate 29 must be replaced each time format changes (width adjustments).

20 20th

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1 Blatt Zeichnungen 1 sheet of drawings

Claims (5)

627492627492 1. Verfahren zur Herstellung von selbstklebenden Ab-deck- und Isolierfolien mit einem Träger aus thermoplastischem Material und einer Klebeschicht aus nicht vernetzbarem, lösungsmittelfreiem, elastomerem Material, dadurch gekennzeichnet, dass die Trägerbahn aus thermoplastischem Material und die Klebeschicht aus nicht vernetzbarem, elastomerem Material aus einer Zweischichtdüse koextru-diert, abgekühlt und aufgewickelt werden. 1. A method for producing self-adhesive cover and insulating films with a carrier made of thermoplastic material and an adhesive layer made of non-crosslinkable, solvent-free, elastomeric material, characterized in that the carrier web made of thermoplastic material and the adhesive layer made of non-crosslinkable, elastomeric material coextruded, cooled and wound up in a two-layer die. 2. Vorrichtung zur Durchführung des Verfahrens nach Patentanspruch 1, dadurch gekennzeichnet, dass zur Ex-trusion der Trägerbahn (8) aus dem thermoplastischen Material und der Selbstklebeschicht (9) aus nicht vernetzbarem, elastomerem Material eine Zweischichtringspaltdüse (17,17', 17") vorgesehen ist, dass in Folienlaufrichtung nacheinander eine Flachlegeeinrichtung (24, 24') und eine Abzugseinrichtung (25) für die flachgelegte und abgekühlte Schlauchfolie (8", 9") angeordnet sind, dass zur Trennung der Schlauchfolienbahn in zwei Einzelbahnen Trennmesser (26) in die Schlauchfolienbahn eingreifen, und dass zur Aufwicklung der Einzelbahnen Aufwickeleinrichtungen (12', 12") vorhanden sind. 2. Device for carrying out the method according to claim 1, characterized in that for the extrusion of the carrier web (8) from the thermoplastic material and the self-adhesive layer (9) from non-crosslinkable, elastomeric material, a two-layer ring gap nozzle (17, 17 ', 17 " ) it is provided that a lay-flat device (24, 24 ') and a take-off device (25) for the laid-flat and cooled tubular film (8 ", 9") are arranged in succession in the film running direction, that separating knives (26) for separating the tubular film web engage in the tubular film web and that there are winding devices (12 ', 12 ") for winding up the individual webs. 2 2nd PATENTANSPRÜCHE PATENT CLAIMS 3. Vorrichtung nach Patentanspruch 2, dadurch gekennzeichnet, dass der Verteilerkanal (17') für das nicht vernetzbare, elastomere Material aussen liegt und die Trennmesser (26) in die Seitenbereiche der Schlauchfolienbahn eingreifen. 3. Device according to claim 2, characterized in that the distribution channel (17 ') for the non-crosslinkable, elastomeric material is on the outside and the separating knives (26) engage in the side areas of the tubular film web. 4. Vorrichtung nach Patentanspruch 3, dadurch gekennzeichnet, dass die mit der Klebeseite der selbstklebenden Folienbahn in Berührung kommenden Walzen eine abweisende Oberfläche aus Silicon-Kautschuk aufweisen. 4. Device according to claim 3, characterized in that the rollers coming into contact with the adhesive side of the self-adhesive film web have a repellent surface made of silicone rubber. 5. Vorrichtung nach Patentanspruch 3, dadurch gekennzeichnet, dass eine Einrichtung (13', 13") zum Zuführen einer Trennbahn, die mit der selbstklebenden Folienbahn aufgewickelt wird, zu den Aufwickeleinrichtungen (12', 12") vorgesehen ist. 5. Device according to claim 3, characterized in that a device (13 ', 13 ") for supplying a separating web, which is wound up with the self-adhesive film web, is provided to the winding-up devices (12', 12").
CH797076A 1975-06-23 1976-06-22 Process and device for producing self-adhesive cover films and insulating films CH627492A5 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19752527942 DE2527942A1 (en) 1975-06-23 1975-06-23 METHOD AND DEVICE FOR THE PRODUCTION OF SELF-ADHESIVE COVERING AND INSULATING FILMS

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CH627492A5 true CH627492A5 (en) 1982-01-15

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Application Number Title Priority Date Filing Date
CH797076A CH627492A5 (en) 1975-06-23 1976-06-22 Process and device for producing self-adhesive cover films and insulating films

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JP (1) JPS524563A (en)
BR (1) BR7603872A (en)
CA (1) CA1089615A (en)
CH (1) CH627492A5 (en)
DE (1) DE2527942A1 (en)
FR (1) FR2315388A1 (en)
GB (1) GB1553881A (en)
HU (1) HU177171B (en)
IT (1) IT1066972B (en)
YU (1) YU40456B (en)

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DE3023086A1 (en) * 1980-06-20 1982-01-07 Bellaplast Maschinenbau GmbH, 6501 Heidesheim METHOD AND DEVICE FOR PRODUCING THIN-WALLED MOLDINGS FROM THERMOPLASTIC PLASTIC
DE3505128A1 (en) * 1985-02-14 1986-08-14 Windmöller & Hölscher, 4540 Lengerich Device for producing films from a carrier web of thermoplastic and from an adhesive layer of non-crosslinkable elastomer
GB2163386A (en) * 1984-07-20 1986-02-26 Windmoeller & Hoelscher Co-extruding a substrate web of synthetic thermoplastic material and an adhesive layer consisting of a non-crosslinkable elastomer
IT1203558B (en) * 1986-05-20 1989-02-15 Firestone Int Dev Spa METHOD FOR THE CREATION OF A FIRST-PHASE RADIAL TIRE FOR VEHICLES
EP0252040B1 (en) * 1986-06-02 1990-11-14 AB AKERLUND & RAUSING Method for the scrap-free manufacture of coated profiles and thermally shaped containers
DE4000560C2 (en) * 1990-01-10 1996-08-22 Unger Teppichhaus Gros Und Ein Cover film for use in the manufacture of screed and screed-like floor coverings
US5128076A (en) * 1991-03-21 1992-07-07 Minnesota Mining And Manufacturing Company Apparatus and method for producing an elongate strip of material
US5124094A (en) * 1991-03-21 1992-06-23 Minnesota Mining And Manufacturing Company Apparatus and method for constraining a rotating tube of material
DE4211669C1 (en) * 1992-04-07 1993-08-19 Continental Aktiengesellschaft, 3000 Hannover, De
DE19501668C1 (en) * 1995-01-20 1996-02-22 Windmoeller & Hoelscher Take-off of coated tubular film from extruder and process plant
FR2752193B1 (en) * 1996-08-08 1998-09-04 Lorraine Laminage METHOD AND INSTALLATION FOR THE CONTINUOUS MANUFACTURE OF A METAL STRIP COATED WITH A POLYMER LAYER
DE29619577U1 (en) * 1996-11-12 1997-01-09 Henkel KGaA, 40589 Düsseldorf Vapor barrier
DE19716996C1 (en) * 1997-04-23 1998-06-04 Beiersdorf Ag Production of 2-sided pressure-sensitive adhesive tape

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US3300543A (en) * 1957-09-23 1967-01-24 Avery Products Corp Stabilized pressure sensitive adhesive consisting of saturated polyester and vinyl chloride polymer
DE1404384B1 (en) * 1958-04-18 1970-07-09 Kendall & Co Method and device for producing a flexible adhesive film
FR1293904A (en) * 1960-07-20 1962-05-18 Beiersdorf & Co Ag Method and device for manufacturing adhesive sheets or tapes
US3467565A (en) * 1961-07-27 1969-09-16 Multifol Patentverwertungs Ag Method of laminating a carrier web and a high melting plastic film
DE6601805U (en) * 1966-10-21 1969-04-10 Grace W R & Co MATERIAL FOR THE PRODUCTION OF A WATERPROOF LAYER ON A SURFACE
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US3692679A (en) * 1970-06-18 1972-09-19 Ethyl Corp Stabilized organic material
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US3783072A (en) * 1971-11-02 1974-01-01 Johnson & Johnson Extrusion process for pressure-sensitive adhesive sheets and tapes

Also Published As

Publication number Publication date
CA1089615A (en) 1980-11-18
YU40456B (en) 1986-02-28
JPS524563A (en) 1977-01-13
FR2315388A1 (en) 1977-01-21
GB1553881A (en) 1979-10-10
HU177171B (en) 1981-08-28
YU150876A (en) 1982-05-31
IT1066972B (en) 1985-03-12
DE2527942A1 (en) 1977-01-13
BR7603872A (en) 1977-04-05
FR2315388B1 (en) 1980-02-15

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