EP1129791A2 - Process for manufacturing anti-adhesive coatings - Google Patents
Process for manufacturing anti-adhesive coatings Download PDFInfo
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- EP1129791A2 EP1129791A2 EP01103042A EP01103042A EP1129791A2 EP 1129791 A2 EP1129791 A2 EP 1129791A2 EP 01103042 A EP01103042 A EP 01103042A EP 01103042 A EP01103042 A EP 01103042A EP 1129791 A2 EP1129791 A2 EP 1129791A2
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- Prior art keywords
- adhesive
- web
- plasma
- adhesive layers
- low
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D1/00—Processes for applying liquids or other fluent materials
- B05D1/62—Plasma-deposition of organic layers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D5/00—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures
- B05D5/08—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures to obtain an anti-friction or anti-adhesive surface
Definitions
- the invention relates to a method for producing anti-adhesive coatings on a web-shaped material and the use of anti-adhesive coatings, especially with adhesive tapes.
- Anti-adhesive layers against pressure-sensitive adhesives are used on sheet-like materials, for example on adhesive tapes or release materials, in order to achieve adequate reversibility of an adhesive bond. This is often particularly problematic in the case of adhesive tapes, since in general special separating forces and residue-free detachment between the adhesive and the back of the backing or separating material are required. In addition, in many cases there should be no material transfer, in particular no silicone transfer, from the anti-adhesive coating to the adhesive compared to PSAs.
- Anti-adhesive layers against PSAs can be used, for example, as wet chemical Coating from solution (solvent or water) is applied, a subsequent drying and / or crosslinking is necessary.
- This networking can be done, for example, thermally or by radiation.
- anti-adhesive layers against PSAs which are wet-chemical applied usually entails high costs because of the equipment of the sheet material with a primer a complete additional Coating process means.
- Another problem is when a certain separation force, for example of an adhesive film on its own back with none of the known methods can be achieved economically.
- the adhesives produced in this way show anti-adhesives Layers generally transfer a material onto the adhesive that is in them with Contact comes.
- Low-pressure plasma polymerization is not used to produce PSAs anti-adhesive layers applied to sheet-like materials, though already a variety of different applications for similar low pressure plasma processes exist. Examples are the coating of plastic bottles with permeation barrier layers or the scratch-resistant coating of plastic surfaces.
- the object of the invention is to avoid the disadvantages of the prior art, at least diminish.
- the task is solved by a process for producing anti-adhesive layers on a web-shaped material, as characterized in more detail in the main claim is.
- the subclaims relate to particularly advantageous embodiments of the procedure.
- the invention further encompasses the use of the antiadhesive Layers.
- the invention relates to a method for producing anti-adhesive Layers on a sheet material by means of low pressure plasma polymerization can be applied to the sheet material by the sheet material is continuously passed through a plasma zone in which a low-pressure plasma is present is.
- Important process parameters that affect the process of depositing the PSAs Anti-adhesive layers and thus control the layer properties are the compounds used to form the low pressure plasma or Carrier or the additional gases, the gas or gas mixture pressure during the Coating and the electrical discharge used for plasma excitation.
- the variation the process parameter is used to optimize and adapt the opposite PSAs of antiadhesive layers to the technical boundary conditions in the respective application.
- Coating is preferably carried out at a gas pressure or gas mixture pressure of 10 -3 to 20 mbar.
- the unwinding station of the web-like material, the rewinding station and the plasma zone are in a vacuum chamber (batch operation) or that web-like material is guided through the plasma zone by means of vacuum locks, which is referred to as a so-called air-to-air operation.
- Organosilicon compounds in particular are used to form the low-pressure plasma such as hexamethyldisiloxane, hexamethyldisilazane and / or tetraethylorthosilicate or perfluorinated hydrocarbons such as perfluomonan and / or perfluoropropene or Mixtures such as hexamethyldisiloxane with trifluoromethane and / or tetrafluoromethane are used.
- hexamethyldisiloxane hexamethyldisilazane and / or tetraethylorthosilicate
- perfluorinated hydrocarbons such as perfluomonan and / or perfluoropropene
- Mixtures such as hexamethyldisiloxane with trifluoromethane and / or tetrafluoromethane are used.
- Non-polymerizable gases such as noble gases and / or nitrogen are preferably used as carrier or additional gases. Additional and carrier gases are used to control the layer deposition and in particular to increase the uniformity and stability of the plasma.
- Plastic sheets, foam carriers, Fabric carrier, non-woven carrier or paper carrier used.
- agent according to the invention has proven to be particularly advantageous Process produced anti-adhesive layers against PSAs with one-sided Adhesive tapes to reduce adhesion as a back coating of the carrier exposed. These are also particularly suitable on the separating material, which is used to cover the adhesive coating.
- Various forms of electrical discharge can be used for plasma excitation become. This is preferably done by kHz, MHz or GHz discharge.
- Crucial for the selection of the form of excitation are the procedural boundary conditions, for example necessary coating speed or gas mixture pressure, during the coating.
- a particular advantage of the method compared to the prior art is the possibility the process of layer deposition and thus that of PSAs Control the anti-adhesive effect of the coatings by varying the process parameters to be able to. This enables an optimal adaptation of the layer properties to the respective application.
- Another advantage of the novel process is the absence of solvents and the Possibility of using substances from a health or environmental point of view are to be avoided.
- a major advantage of the adhesives produced with the method compared to PSAs anti-adhesive layers is the fact that no material transfer from the opposite PSA anti-adhesive layer on the adhesive brought into contact with it takes place.
- the thermal load on the sheet materials is due to the used Low pressure plasma low, so that especially temperature sensitive Materials such as polyethylene, polypropylene or foams coated without damage can be.
- Another advantage is the high long-term stability of the new types compared to PSAs anti-adhesive layers, as they are highly cross-linked due to the new process and are thermally stable.
- the anti-adhesive coatings formed by means of plasma polymerization in particular for adhesive backs and release materials are accordingly made solvent-free, show no transition of material compared to PSAs.
- the web-shaped material 1 is from an unwinding station 2 through the Plasma coating zone 3 moves.
- the plasma coating zone 3 through Limits 8 is separated from the rest of the vacuum chamber 7, which are used to form of the low-pressure plasma required connections initiated via a feed 4.
- the plasma excitation and thus the fragmentation of the compounds takes place via a high-frequency alternating field, which is applied between the electrodes 5 and 6.
- electrode 5 is designed as an earthed chill roll and thus also serves for transport of the sheet material 1.
- Electrodes 10, 11 are formed flat, and the web-like material 1 is non-contact passed through the electrode gap.
- the selection of the respective electrode arrangement depends on the specific application from. In the case of plasma excitation by means of GHz discharge, the electrodes are replaced by appropriate GHz couplings to replace.
- a polyester film transparent, 500 mm wide and with a thickness of 25 ⁇ m an anti-adhesive layer against PSAs by means of low-pressure plasma polymerization upset.
- the coating takes place accordingly in a system 1 with a hexamethyldisiloxane flow of 10 g / h at a process pressure of 1 mbar.
- the film is passed through the plasma zone at a speed of 10 m / min (Length 200 mm), so that a coating time of 1.2 s results.
- the plasma excitation takes place by means of kHz discharge.
- a double-sided test tape which consists of a foamed carrier and equipped with an acrylate pressure sensitive adhesive is, in a width of 2 cm to that produced with the invention glued to PSA anti-adhesive layer, on which Backside reinforced with PVC film and rolled on (80 mm diameter, 2 kg Weight, is rolled back and forth over the adhesive tape five times at approx. 10 m / min).
- the test of the separating force between the test adhesive tape and that against PSAs anti-adhesive layer is done by means of a traction machine at a Speed of 300 mm / min at an angle of 180 °.
- the separation force between the Test adhesive tape and that according to the invention with an anti-adhesive against PSAs Layered film is 0.52 N / cm.
- the opposite PSAs In this example, the antiadhesive effect is below that of conventional ones Carbamat lacquers is achieved and as required on the back of the tape become.
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- Adhesive Tapes (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
- Treatments Of Macromolecular Shaped Articles (AREA)
Abstract
Description
Die Erfindung betrifft ein Verfahren zur Herstellung von antiadhäsiven Beschichtungen auf einem bahnförmigen Material und die Verwendung der antiadhäsiven Beschichtungen, insbesondere bei Klebebändern.The invention relates to a method for producing anti-adhesive coatings on a web-shaped material and the use of anti-adhesive coatings, especially with adhesive tapes.
Gegenüber Haftklebmassen antiadhäsive Schichten werden auf bahnförmigen Materialien,
beispielsweise auf Klebebändern oder Trennmaterialien, eingesetzt, um eine ausreichende
Reversibilität einer Verklebung zu erzielen.
Bei Klebebändern ist dies häufig besonders problematisch, da im allgemeinen spezielle
Trennkräfte und rückstandsfreies Ablösen zwischen Klebmasse und Trägerrückseite
beziehungsweise Trennmaterial gefordert werden. Zudem soll in vielen Fällen kein
Materialübertrag, insbesondere kein Silikonübertrag, von der gegenüber Haftklebmassen
antiadhäsiven Beschichtung auf die Klebmasse stattfinden.Anti-adhesive layers against pressure-sensitive adhesives are used on sheet-like materials, for example on adhesive tapes or release materials, in order to achieve adequate reversibility of an adhesive bond.
This is often particularly problematic in the case of adhesive tapes, since in general special separating forces and residue-free detachment between the adhesive and the back of the backing or separating material are required. In addition, in many cases there should be no material transfer, in particular no silicone transfer, from the anti-adhesive coating to the adhesive compared to PSAs.
Zur Herstellung von gegenüber Haftklebmassen antiadhäsiven Schichten auf bahnförmigen Materialien, insbesondere auf Rückseiten von Klebebändern, werden unterschiedliche Verfahren eingesetzt.For the production of anti-adhesive layers on web-like layers Materials, especially on the back of adhesive tapes, become different Process used.
Gegenüber Haftklebmassen antiadhäsive Schichten können zum Beispiel als naßchemische Beschichtung aus Lösung (Lösungsmittel oder Wasser) aufgebracht werden, wobei eine anschließende Trocknung und/oder Vernetzung notwendig ist. Diese Vernetzung kann beispielsweise thermisch oder durch Strahlung erfolgen. Anti-adhesive layers against PSAs can be used, for example, as wet chemical Coating from solution (solvent or water) is applied, a subsequent drying and / or crosslinking is necessary. This networking can be done, for example, thermally or by radiation.
Die Nachteile der herkömmlichen Verfahren zum Aufbringen von gegenüber Haftklebmassen antiadhäsiven Schichten liegen vor allem darin, daß in vielen Fällen Lösemittel verwendet werden.The disadvantages of the conventional methods for applying pressure sensitive adhesives Anti-adhesive layers lie mainly in the fact that in many cases solvents be used.
Die Verwendung von gegenüber Haftklebmassen antiadhäsiven Schichten, die naßchemisch aufgebracht werden, bringt in der Regel hohe Kosten mit sich, da die Ausrüstung des bahnförmigen Materials mit einem Primer einen kompletten zusätzlichen Beschichtungsvorgang bedeutet. Außerdem sind einige gegenüber Haftklebmassen antiadhäsive Schichten unter Umwelt- und Gesundheitsaspekten als bedenklich einzustufen, insbesondere weil zur naßchemischen Beschichtung Lösungsmittel notwendig sind.The use of anti-adhesive layers against PSAs which are wet-chemical applied, usually entails high costs because of the equipment of the sheet material with a primer a complete additional Coating process means. In addition, some are opposed to PSAs classifying anti-adhesive layers from environmental and health aspects as questionable, especially because solvents are required for wet chemical coating are.
Ein weiteres Problem besteht dann, wenn eine bestimmte Trennkraft, zum Beispiel eines Klebefilms auf seiner eigenen Rückseite mit keinem der bekannten Verfahren wirtschaftlich erzielt werden kann.Another problem is when a certain separation force, for example of an adhesive film on its own back with none of the known methods can be achieved economically.
Zudem zeigen die derart hergestellten gegenüber Haftklebmassen antiadhäsiven Schichten im allgemeinen einen Materialübertrag auf die Klebemasse, die mit ihnen in Kontakt kommt.In addition, the adhesives produced in this way show anti-adhesives Layers generally transfer a material onto the adhesive that is in them with Contact comes.
Die Niederdruckplasmapolymerisation wird nicht zur Herstellung von gegenüber Haftklebmassen antiadhäsiven Schichten auf bahnförmigen Materialien angewendet, obwohl bereits eine Vielzahl unterschiedlicher Anwendungen für ähnliche Niederdruckplasma-Prozesse existieren. Beispiele sind die Beschichtung von Kunststoffflaschen mit Permeationssperrschichten beziehungsweise die Kratzfestbeschichtung von Kunststoffoberflächen.Low-pressure plasma polymerization is not used to produce PSAs anti-adhesive layers applied to sheet-like materials, though already a variety of different applications for similar low pressure plasma processes exist. Examples are the coating of plastic bottles with permeation barrier layers or the scratch-resistant coating of plastic surfaces.
Aufgabe der Erfindung ist es, die Nachteile des Standes der Technik zu vermeiden, zumindest zu vermindern. Insbesondere ist es die Aufgabe der Erfindung, auf der Oberfläche von bahnförmigen Materialien, die zur Herstellung von Klebebändern oder Trennmaterialien bestimmt sind, eine deutliche Haftungsverminderung von Klebmassen zu erreichen, wobei die Haftungsverminderung langzeitstabil sein muß, keine Lösungsmittel eingesetzt werden sollen und das Verfahren und die gegenüber Haftklebmassen antiadhäsiven Schichten gesundheitlich und unter Umweltaspekten unbedenklich sein sowie keinen Materialtransfer auf die mit ihnen in Kontakt gebrachten Klebmassen aufweisen sollen.The object of the invention is to avoid the disadvantages of the prior art, at least diminish. In particular, it is the object of the invention on the surface of sheet-like materials used for the production of adhesive tapes or Release materials are determined, a significant reduction in adhesion of adhesives to achieve, the reduction in adhesion must be long-term stable, no solvents are to be used and the method and compared to PSAs anti-adhesive layers should be harmless to health and the environment and have no material transfer to the adhesives brought into contact with them should.
Gelöst wird die Aufgabe durch ein Verfahren zur Herstellung von antiadhäsiven Schichten auf einem bahnförmigen Material, wie es näher im Hauptanspruch gekennzeichnet ist. Gegenstand der Unteransprüche sind besonders vorteilhafte Ausführungsformen des Verfahrens. Des weiteren umfaßt die Erfindung die Verwendung der antiadhäsiven Schichten.The task is solved by a process for producing anti-adhesive layers on a web-shaped material, as characterized in more detail in the main claim is. The subclaims relate to particularly advantageous embodiments of the procedure. The invention further encompasses the use of the antiadhesive Layers.
Demgemäß betrifft die Erfindung ein Verfahren zur Herstellung von antiadhäsiven Schichten auf einem bahnförmigen Material, die mittels Niederdruckplasmapolymerisation auf das bahnförmige Material aufgebracht werden, indem das bahnförmige Material kontinuierlich durch eine Plasmazone geführt wird, in der ein Niederdruckplasma vorhanden ist.Accordingly, the invention relates to a method for producing anti-adhesive Layers on a sheet material by means of low pressure plasma polymerization can be applied to the sheet material by the sheet material is continuously passed through a plasma zone in which a low-pressure plasma is present is.
Wichtige Prozeßparameter, die den Prozeß der Abscheidung der gegenüber Haftklebmassen antiadhäsiven Schichten und damit die Schichteigenschaften steuern, sind die eingesetzten Verbindungen zur Bildung des Niederdruckplasmas beziehungsweise der Träger oder die Zusatzgase, der Gas- beziehungsweise Gasgemischdruck während der Beschichtung und die eingesetzte elektrische Entladung zur Plasmaanregung. Die Variation der Prozeßparameter dient zur Optimierung und zur Anpassung der gegenüber Haftklebmassen antiadhäsiven Schichten an die technischen Randbedingungen im jeweiligen Anwendungsfall.Important process parameters that affect the process of depositing the PSAs Anti-adhesive layers and thus control the layer properties are the compounds used to form the low pressure plasma or Carrier or the additional gases, the gas or gas mixture pressure during the Coating and the electrical discharge used for plasma excitation. The variation the process parameter is used to optimize and adapt the opposite PSAs of antiadhesive layers to the technical boundary conditions in the respective application.
Vorzugsweise wird bei einem Gasdruck oder Gasgemischdruck von 10-3 bis 20 mbar beschichtet.Coating is preferably carried out at a gas pressure or gas mixture pressure of 10 -3 to 20 mbar.
Vorteilhaft ist, wenn sich die Abwickelstation des bahnförmigen Materials, die Aufwickelstation und die Plasmazone in einer Vakuumkammer befinden (batch-Betrieb) oder das bahnförmige Material mittels Vakuumschleusen durch die Plasmazone geführt wird, was als sogenannter Air-to-Air-Betrieb bezeichnet wird.It is advantageous if the unwinding station of the web-like material, the rewinding station and the plasma zone are in a vacuum chamber (batch operation) or that web-like material is guided through the plasma zone by means of vacuum locks, which is referred to as a so-called air-to-air operation.
Zur Bildung des Niederdruckplasmas werden insbesondere siliziumorganische Verbindungen wie Hexamethyldisiloxan, Hexamethyldisilazan und/oder Tetraethylorthosilikat oder perfluorierte Kohlenwasserstoffe wie Perfluomonan und/oder Perfluorpropen oder Gemische wie Hexamethyldisiloxan mit Trifluormethan und/oder Tetrafluormethan eingesetzt.Organosilicon compounds in particular are used to form the low-pressure plasma such as hexamethyldisiloxane, hexamethyldisilazane and / or tetraethylorthosilicate or perfluorinated hydrocarbons such as perfluomonan and / or perfluoropropene or Mixtures such as hexamethyldisiloxane with trifluoromethane and / or tetrafluoromethane are used.
Als Träger- oder Zusatzgase werden vorzugsweise nicht-polymerisierbare Gase wie
Edelgase und/oder Stickstoff eingesetzt.
Zusatz- und Trägergase werden eingesetzt, um die Schichtabscheidung zu steuern und
insbesondere die Gleichmäßigkeit und die Stabilität des Plasmas zu steigern.Non-polymerizable gases such as noble gases and / or nitrogen are preferably used as carrier or additional gases.
Additional and carrier gases are used to control the layer deposition and in particular to increase the uniformity and stability of the plasma.
Als bahnförmige Materialien werden vorzugsweise Kunststoffolien, Schaumträger, Gewebeträger, Vliesträger oder Papierträger eingesetzt.Plastic sheets, foam carriers, Fabric carrier, non-woven carrier or paper carrier used.
Als besonders vorteilhaft hat sich die Verwendung der mittels des erfindungsgemäßen Verfahrens hergestellten gegenüber Haftklebmassen antiadhäsiven Schichten bei einseitigen Klebebändern zur Haftungsverminderung als Rückseitenbeschichtung des Trägers herausgestellt. Ebenfalls besonders geeignet sind diese auf dem Trennmaterial, das zur Abdeckung der Klebebeschichtung eingesetzt wird.The use of the agent according to the invention has proven to be particularly advantageous Process produced anti-adhesive layers against PSAs with one-sided Adhesive tapes to reduce adhesion as a back coating of the carrier exposed. These are also particularly suitable on the separating material, which is used to cover the adhesive coating.
Zur Plasmaanregung können verschiedene Formen der elektrischen Entladung genutzt werden. Vorzugsweise geschieht dies durch kHz-, MHz- oder GHz-Entladung. Entscheidend für die Auswahl der Anregungsform sind die verfahrenstechnischen Randbedingungen, zum Beispiel notwendige Beschichtungsgeschwindigkeit oder Gasgemischdruck, während der Beschichtung.Various forms of electrical discharge can be used for plasma excitation become. This is preferably done by kHz, MHz or GHz discharge. Crucial for the selection of the form of excitation are the procedural boundary conditions, for example necessary coating speed or gas mixture pressure, during the coating.
Ein besonderer Vorteil des Verfahrens im Vergleich zum Stand der Technik ist die Möglichkeit, den Prozeß der Schichtabscheidung und damit die gegenüber Haftklebmassen antiadhäsive Wirkung der Beschichtungen durch Variation der Prozeßparameter steuern zu können. Dies ermöglicht eine optimale Anpassung der Schichteigenschaften an den jeweiligen Anwendungsfall.A particular advantage of the method compared to the prior art is the possibility the process of layer deposition and thus that of PSAs Control the anti-adhesive effect of the coatings by varying the process parameters to be able to. This enables an optimal adaptation of the layer properties to the respective application.
Ein weiterer Vorteil des neuartigen Verfahrens ist der Verzicht auf Lösungsmittel und die Möglichkeit, den Einsatz von Stoffen, die unter Gesundheits- oder Umweltaspekten bedenklich sind, zu vermeiden.Another advantage of the novel process is the absence of solvents and the Possibility of using substances from a health or environmental point of view are to be avoided.
Ein wesentlicher Vorteil der mit dem Verfahren hergestellten gegenüber Haftklebmassen antiadhäsiven Schichten ist die Tatsache, daß kein Materialtransfer von der gegenüber Haftklebmassen antiadhäsiven Schicht auf die damit in Kontakt gebrachte Klebmasse stattfindet.A major advantage of the adhesives produced with the method compared to PSAs anti-adhesive layers is the fact that no material transfer from the opposite PSA anti-adhesive layer on the adhesive brought into contact with it takes place.
Außerdem ist die thermische Belastung der bahnförmigen Materialien aufgrund des eingesetzten Niederdruckplasmas gering, so daß insbesondere temperaturempfindliche Materialien wie Polyethylen, Polypropylen oder Schäume ohne Schädigung beschichtet werden können.In addition, the thermal load on the sheet materials is due to the used Low pressure plasma low, so that especially temperature sensitive Materials such as polyethylene, polypropylene or foams coated without damage can be.
Ein weiterer Vorteil ist die hohe Langzeitstabilität der neuartigen gegenüber Haftklebmassen antiadhäsiven Schichten, da diese aufgrund des neuartigen Verfahrens hochvemetzt und thermisch stabil sind.Another advantage is the high long-term stability of the new types compared to PSAs anti-adhesive layers, as they are highly cross-linked due to the new process and are thermally stable.
Die mittels Plasmapolymerisation geformten antiadhäsiven Beschichtungen insbesondere für Klebebandrückseiten und Trennmaterialien sind demgemäß lösemittelfrei hergestellt, zeigen gegenüber Haftklebmassen keinen Übergang von Material.The anti-adhesive coatings formed by means of plasma polymerization in particular for adhesive backs and release materials are accordingly made solvent-free, show no transition of material compared to PSAs.
Im folgenden sollen besonders vorteilhafte Ausführungsformen des erfindungsgemäßen Verfahrens dargestellt werden, ohne diese damit unnötig einschränken zu wollen.The following are particularly advantageous embodiments of the invention Procedures are presented, without wanting to restrict them unnecessarily.
- Figur 1Figure 1
- den Aufbau einer erfindungsgemäßen Vakuumbeschichtungsanlage undthe construction of a vacuum coating system according to the invention and
- Figur 2Figure 2
- eine alternative Anordnung der Elektroden aus Figur 1.an alternative arrangement of the electrodes of Figure 1.
Gemäß Figur 1 wird das bahnförmige Material 1 von einer Abwickelstation 2 durch die
Plasmabeschichtungszone 3 bewegt. In der Plasmabeschichtungszone 3, die durch
Begrenzungen 8 vom Rest der Vakuumkammer 7 getrennt ist, werden die zur Bildung
des Niederdruckplasmas erforderlichen Verbindungen über eine Zufuhr 4 eingeleitet.
Die Plasmaanregung und damit die Fragmentierung der Verbindungen erfolgt über ein
hochfrequentes Wechselfeld, das zwischen den Elektroden 5 und 6 angelegt ist. Elektrode
5 ist als geerdete Kühlwalze ausgeführt und dient damit zugleich dem Transport
des bahnförmigen Materials 1. Schließlich wird das bahnförmige Material 1 nach der
Beschichtung einer Aufwickelstation 9 zugeführt.According to Figure 1, the web-
Eine alternative Anordnung der Elektroden 10, 11 zeigt Figur 2. In dieser sind beide
Elektroden 10, 11 flächig ausgeformt, und das bahnförmige Material 1 wird berührungsfrei
durch den Elektrodenspalt geführt.An alternative arrangement of the
Die Auswahl der jeweiligen Elektrodenanordnung hängt vom speziellen Anwendungsfall ab. Bei einer Plasmaanregung mittels GHz-Entladung sind die Elektroden durch entsprechende GHz-Einkopplungen zu ersetzen.The selection of the respective electrode arrangement depends on the specific application from. In the case of plasma excitation by means of GHz discharge, the electrodes are replaced by appropriate GHz couplings to replace.
Schließlich wird das erfindungsgemäße Verfahren beispielhaft erläutert, ohne dieses aber auch hiermit unnötig einschränken zu wollen.Finally, the method according to the invention is explained by way of example, without it but also want to limit unnecessarily.
Auf eine Polyesterfolie, transparent, 500 mm breit und mit einer Dicke von 25 µm, wird
eine gegenüber Haftklebmassen antiadhäsive Schicht mittels Niederdruckplasmapolymerisation
aufgebracht. Die Beschichtung erfolgt in einer Anlage entsprechend
Figur 1 mit einem Hexamethyldisiloxan-Fluß von 10 g/h bei einem Prozeßdruck von 1
mbar. Die Folie wird mit einer Geschwindigkeit von 10 m/min durch die Plasmazone
(Länge 200 mm) geführt, so daß sich eine Beschichtungszeit von 1,2 s ergibt. Die Plasmaanregung
erfolgt mittels kHz-Entladung.On a polyester film, transparent, 500 mm wide and with a thickness of 25 µm
an anti-adhesive layer against PSAs by means of low-pressure plasma polymerization
upset. The coating takes place accordingly in a
Die Güte der gegenüber Haftklebmassen antiadhäsiven Schicht wird in einer Trennkraftprüfung untersucht. Zu diesem Zweck wird ein doppelseitiges Testklebeband, welches aus einem geschäumten Träger besteht und mit einer Acrylat-Haftklebmasse ausgestattet ist, in einer Breite von 2 cm auf die mit der erfindungsgemäß hergestellten gegenüber Haftklebmassen antiadhäsiven Schicht versehenen Folie geklebt, auf der Rückseite mit einer PVC-Folie verstärkt und angerollt (80 mm Durchmesser, 2 kg Gewicht, wird mit ca. 10 m/min fünf mal über den Klebstreifen hin- und hergerollt).The quality of the anti-adhesive layer against PSAs is checked in a release force test examined. For this purpose, a double-sided test tape, which consists of a foamed carrier and equipped with an acrylate pressure sensitive adhesive is, in a width of 2 cm to that produced with the invention glued to PSA anti-adhesive layer, on which Backside reinforced with PVC film and rolled on (80 mm diameter, 2 kg Weight, is rolled back and forth over the adhesive tape five times at approx. 10 m / min).
Die Prüfung der Trennkraft zwischen Testklebeband und der gegenüber Haftklebmassen antiadhäsiven Schicht erfolgt mittels einer Zugkraftmaschine bei einer Geschwindigkeit von 300 mm/min im Winkel von 180°. Die Trennkraft zwischen dem Testklebeband und der erfindungsgemäß mit einer gegenüber Haftklebmassen antiadhäsiven Schicht versehenen Folie beträgt 0,52 N/cm. Die gegenüber Haftklebmassen antiadhäsive Wirkung liegt in diesem Beispiel damit unter dem Bereich, der mit herkömmlichen Carbamat-Lacken erreicht wird und wie sie auf Klebebandrückseiten gefordert werden.The test of the separating force between the test adhesive tape and that against PSAs anti-adhesive layer is done by means of a traction machine at a Speed of 300 mm / min at an angle of 180 °. The separation force between the Test adhesive tape and that according to the invention with an anti-adhesive against PSAs Layered film is 0.52 N / cm. The opposite PSAs In this example, the antiadhesive effect is below that of conventional ones Carbamat lacquers is achieved and as required on the back of the tape become.
Claims (10)
bei einem Gasdruck oder Gasgemischdruck von 10-3 bis 20 mbar beschichtet wird.A method according to claim 1, characterized in that
is coated at a gas pressure or gas mixture pressure of 10 -3 to 20 mbar.
das Niederdruckplasma durch elektrische Entladung, insbesondere kHz-, MHz- oder GHz-Entladung, erzeugt wird.A method according to claim 1 and 2, characterized in that
the low-pressure plasma is generated by electrical discharge, in particular kHz, MHz or GHz discharge.
sich die Abwickelstation des bahnförmigen Materials, die Aufwickelstation und die Plasmazone in einer Vakuumkammer befinden.Method according to claims 1 to 3, characterized in that
the unwinding station of the web-like material, the winding station and the plasma zone are in a vacuum chamber.
das bahnförmige Material mittels Vakuumschleusen durch die Plasmazone geführt wird.Method according to claims 1 to 4, characterized in that
the web-like material is guided through the plasma zone by means of vacuum locks.
zur Bildung des Niederdruckplasmas siliziumorganische Verbindungen wie Hexamethyldisiloxan, Hexamethyldisilazan und/oder Tetraethylorthosilikat oder perfluorierte Kohlenwasserstoffe wie Perfluornonan und/oder Perfluorpropen oder Gemische von siliziumorganischen Verbindungen mit perfluorierten Kohlenwasserstoffen wie Hexamethyldisiloxan mit Trifluormethan und/oder Tetrafluormethan eingesetzt werden.Process according to Claims 1 to 5, characterized in that
organosilicon compounds such as hexamethyldisiloxane, hexamethyldisilazane and / or tetraethylorthosilicate or perfluorinated hydrocarbons such as perfluorononane and / or perfluoropropene or mixtures of organosilicon compounds with perfluorinated hydrocarbons such as hexamethyldisiloxane with trifluoromethane and / or tetrafluoride are used to form the low-pressure plasma.
als Träger- oder Zusatzgase nicht-polymerisierbare Gase wie Edelgase und/oder Stickstoff eingesetzt werden. Method according to claims 1 to 6, characterized in that
non-polymerizable gases such as noble gases and / or nitrogen are used as carrier or additional gases.
als bahnförmige Materialien Kunststoffolien, Schaumträger, Gewebeträger, Vliesträger oder Papierträger eingesetzt werden.Process according to Claims 1 to 7, characterized in that
Plastic sheeting, foam backing, fabric backing, fleece backing or paper backing can be used as sheet-like materials.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10009856 | 2000-03-01 | ||
| DE10009856A DE10009856A1 (en) | 2000-03-01 | 2000-03-01 | Process for the production of anti-adhesive coatings |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP1129791A2 true EP1129791A2 (en) | 2001-09-05 |
| EP1129791A3 EP1129791A3 (en) | 2003-08-27 |
| EP1129791B1 EP1129791B1 (en) | 2005-12-28 |
Family
ID=7633029
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP01103042A Expired - Lifetime EP1129791B1 (en) | 2000-03-01 | 2001-02-09 | Process for manufacturing anti-adhesive coatings |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US6444274B2 (en) |
| EP (1) | EP1129791B1 (en) |
| DE (2) | DE10009856A1 (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1978067A1 (en) * | 2007-04-02 | 2008-10-08 | Nitto Europe N.V | Release Liner |
| WO2016131984A1 (en) * | 2015-02-20 | 2016-08-25 | Tesa Se | Method for reducing the winding level adhesiveness of an adhesive tape roll |
| DE102015226317A1 (en) | 2015-12-21 | 2017-06-22 | Tesa Se | Transfer tape with security features for the side edge of an adhesive tape |
| DE102015226230A1 (en) | 2015-12-21 | 2017-06-22 | Tesa Se | Transfer tape for reducing the side edge tackiness of an adhesive tape |
| WO2018010930A1 (en) | 2016-07-15 | 2018-01-18 | Tesa Se | Reducing the edge stickiness of a roll of adhesive tape |
| DE102017210066A1 (en) | 2017-06-14 | 2018-12-20 | Tesa Se | Method for simultaneous plasma edge encapsulation of at least two sides of the adhesive tape |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8840970B2 (en) | 2011-01-16 | 2014-09-23 | Sigma Laboratories Of Arizona, Llc | Self-assembled functional layers in multilayer structures |
| US9968963B2 (en) | 2015-08-31 | 2018-05-15 | Sigma Laboratories Of Arizona, Llc | Functional coating |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5112025A (en) * | 1990-02-22 | 1992-05-12 | Tdk Corporation | Molds having wear resistant release coatings |
| EP0841140A2 (en) * | 1996-11-12 | 1998-05-13 | Bae Hyeock Chun | Method of enhancing releasing effect of mould using low temperature plasma processes |
| EP0949013A2 (en) * | 1998-04-04 | 1999-10-13 | Beiersdorf Aktiengesellschaft | Process for manufacturing an adhesion promoting layer |
-
2000
- 2000-03-01 DE DE10009856A patent/DE10009856A1/en not_active Withdrawn
-
2001
- 2001-02-09 DE DE50108498T patent/DE50108498D1/en not_active Expired - Fee Related
- 2001-02-09 EP EP01103042A patent/EP1129791B1/en not_active Expired - Lifetime
- 2001-02-22 US US09/790,306 patent/US6444274B2/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5112025A (en) * | 1990-02-22 | 1992-05-12 | Tdk Corporation | Molds having wear resistant release coatings |
| EP0841140A2 (en) * | 1996-11-12 | 1998-05-13 | Bae Hyeock Chun | Method of enhancing releasing effect of mould using low temperature plasma processes |
| EP0949013A2 (en) * | 1998-04-04 | 1999-10-13 | Beiersdorf Aktiengesellschaft | Process for manufacturing an adhesion promoting layer |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1978067A1 (en) * | 2007-04-02 | 2008-10-08 | Nitto Europe N.V | Release Liner |
| WO2016131984A1 (en) * | 2015-02-20 | 2016-08-25 | Tesa Se | Method for reducing the winding level adhesiveness of an adhesive tape roll |
| US20180009002A1 (en) * | 2015-02-20 | 2018-01-11 | Tesa Se | Method for reducing the winding level adhesiveness of an adhesive tape roll |
| DE102015226317A1 (en) | 2015-12-21 | 2017-06-22 | Tesa Se | Transfer tape with security features for the side edge of an adhesive tape |
| DE102015226230A1 (en) | 2015-12-21 | 2017-06-22 | Tesa Se | Transfer tape for reducing the side edge tackiness of an adhesive tape |
| DE102015226317B4 (en) * | 2015-12-21 | 2017-10-12 | Tesa Se | Transfer tape with security features for the side edge of an adhesive tape |
| WO2018010930A1 (en) | 2016-07-15 | 2018-01-18 | Tesa Se | Reducing the edge stickiness of a roll of adhesive tape |
| DE102016212971A1 (en) | 2016-07-15 | 2018-01-18 | Tesa Se | Reduction of the side edge tackiness of a roll of adhesive tape |
| DE102017210066A1 (en) | 2017-06-14 | 2018-12-20 | Tesa Se | Method for simultaneous plasma edge encapsulation of at least two sides of the adhesive tape |
Also Published As
| Publication number | Publication date |
|---|---|
| EP1129791B1 (en) | 2005-12-28 |
| US6444274B2 (en) | 2002-09-03 |
| DE50108498D1 (en) | 2006-02-02 |
| DE10009856A1 (en) | 2001-09-06 |
| US20010019743A1 (en) | 2001-09-06 |
| EP1129791A3 (en) | 2003-08-27 |
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