EP1400370B1 - Substrate with an adhesive layer - Google Patents

Substrate with an adhesive layer Download PDF

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Publication number
EP1400370B1
EP1400370B1 EP02021042A EP02021042A EP1400370B1 EP 1400370 B1 EP1400370 B1 EP 1400370B1 EP 02021042 A EP02021042 A EP 02021042A EP 02021042 A EP02021042 A EP 02021042A EP 1400370 B1 EP1400370 B1 EP 1400370B1
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EP
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Prior art keywords
adhesive layer
substrate
coating
adhesive
pressure
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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.)
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EP02021042A
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German (de)
French (fr)
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EP1400370A1 (en
Inventor
Herbert Dr. Knolle
Arno Kluck
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Print Inform GmbH and Co KG
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Print Inform GmbH and Co KG
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Priority to SI200230186T priority Critical patent/SI1400370T1/en
Priority to PT02021042T priority patent/PT1400370E/en
Priority to ES02021042T priority patent/ES2246366T3/en
Priority to AT02021042T priority patent/ATE300432T1/en
Priority to EP02021042A priority patent/EP1400370B1/en
Application filed by Print Inform GmbH and Co KG filed Critical Print Inform GmbH and Co KG
Priority to DK02021042T priority patent/DK1400370T3/en
Priority to DE50203772T priority patent/DE50203772D1/en
Publication of EP1400370A1 publication Critical patent/EP1400370A1/en
Application granted granted Critical
Publication of EP1400370B1 publication Critical patent/EP1400370B1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D5/00—Sheets united without binding to form pads or blocks
    • B42D5/003—Note-pads
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42C—BOOKBINDING
    • B42C3/00—Making booklets, pads, or form sets from multiple webs

Definitions

  • the invention relates to a substrate which is based on at least one Site completely or partially provided with a pressure-sensitive adhesive layer is, as well as a method for temporarily reducing the Adhesive force of a pressure-sensitive adhesive layer.
  • So-called sticky notes are widely used in everyday office life. It is a piece of paper from a substrate (usually paper), the on one side usually on a partial surface coated with a so-called repositionable adhesive are.
  • the piece of paper can be repeatedly on a smooth counter surface stick on and peel off without a substantial Reduction of the adhesive force occurs.
  • a repositionable substrate for use as a sticky note
  • an adhesive whose surface inactive in places.
  • the surface of the adhesive layer is partially through covered or non-sticky (adhesive) particles, so that only the between These areas exposed areas are available as adhesive areas.
  • the term substrate designates any useful document for Applying a pressure-sensitive adhesive.
  • it may be the substrate is a paper or polymeric material, preferably are, for example, notes or markers, Adhesive films or the like.
  • the substrate is wholly or partly on at least one side provided with a pressure-sensitive adhesive layer.
  • This is any self-adhesive coating, which is an adhesion of the Can cause substrates on a mating surface. It may be to act a permanent adhesive, in this case is a once glued substrate not or only with change or destruction of the substrate and / or the pressure-sensitive adhesive layer removable again.
  • repositionable Adhesive in particular repositionable microsphere adhesive with microspheres made of self-adhesive polymer, for example from polyacrylate, as for example from DE-A-2836319 are known.
  • Repositionable means that such a pressure-sensitive adhesive on a clean, smooth counter surface glued on several times and again can be replaced without appreciable on this counter surface Leave adhesive residue or appreciable adhesive strength losing.
  • a coating that reduces the adhesive force is applied on the substrate opposite side of at least part of the pressure-sensitive adhesive layer.
  • a bond strength reduction to below is preferred 50 cN / 25 mm, preferably below 35 cN / 25 mm, more preferably below 20 cN / 25 mm, more preferably below 5 cN / 25 mm.
  • the term adhesive refers to the FINAT test method # 2 (peel adhesion) measured force required is to make a 25 mm wide strip of paper with the appropriate pressure-sensitive adhesive layer is provided by a standardized Remove counter surface from steel. This so-called Peel adhesion is measured at a peel angle of 90 ° at a withdrawal speed of 300 mm / min.
  • the term coating designates in the context of the present Invention on the side facing away from the substrate of the Pressure-sensitive adhesive layer applied and their adhesive force-reducing Layer of a material which, when heated to a temperature the substrate and pressure-sensitive adhesive layer are not irreversible change, is fleeting.
  • the material of the coating volatilizes According to the invention preferably at a temperature of 40 ° C or more. In particular, such material is preferred which at a temperature of 40 - 200 ° C, preferably 50 - 150 ° C, more preferably 50 - 100 ° C volatile is.
  • the material of the adhesion-reducing coating is according to the invention preferably in powder form and selected from the group consisting of azodicarbonamides, ammonium carbonate and more preferably ammonium bicarbonate.
  • the present invention is under a non-irreversible Change the substrate and the pressure-sensitive adhesive layer too understand that after heating the substrate its use is guaranteed for the predetermined purpose and the Pressure-sensitive adhesive layer has sufficient adhesive power to adhesion to effect the substrate on the predetermined mating surface.
  • the inactivation amount of the adhesive on the pressure-sensitive adhesive layer Coating is dependent on the substrate and type and Amount of pressure-sensitive adhesive layer on the substrate; also of the type and nature of the inactivation material used. Preferred are amounts of the inactivation material of at least 15 gsm of pressure-sensitive adhesive surface, more preferred at least 25 or 35 gsm.
  • a commonly used repositionable pressure sensitive adhesive is a Polyacrylate microsphere pressure-sensitive adhesive, such as in DE-C-28 36 319 and under the mark "Info-Notes” used sticky notes is used.
  • the adhesive application weight is about 5 gsm.
  • For inactivation of this adhesive layer about 15 g / sqm are crystalline Ammonium hydrogen carbonate required as it is the name "ABC shoot” is available.
  • the essence of the invention is the bond strength of an already functionally effective adhesive layer, with the one Substrate is provided by coating with a while heating temporarily reduce volatile material for as long as until by simply heating the coating Adhesive strength of the adhesive layer (at least partially) restored becomes.
  • the particular advantage of the present invention is in the Facilitate the processing and packaging of already with a pressure-sensitive adhesive layer provided substrate.
  • the substrate can thus easily Assembled in rolls and also unrolled again be without the pressure-sensitive adhesive layer handling problems prepares. Also the subsequent cutting and finishing is due to the inactivated pressure-sensitive adhesive layer considerably relieved. After the completion of the corresponding Processing and finishing steps can be done by heating of the finished product its bond strength restored become.
  • the invention further relates to a method for temporary Reduction of the adhesive force of a pressure-sensitive adhesive layer on the pressure-sensitive adhesive layer, a the adhesive force-reducing Coating is applied and the material of this coating volatilizes upon heating to a temperature which does not irreversibly change the pressure-sensitive adhesive layer.
  • the application of this coating is when using powdered coating material by simply brushing, Sputtering or electrostatic application possible.
  • the invention is described below by way of examples and a Drawing explained.
  • the drawing shows a cross section by a substrate according to the invention.
  • the substrate 1 is coated on one side with a pressure-sensitive adhesive layer 2, on the on the side facing away from the substrate one the adhesive inactivating coating 3 is applied.
  • Adhesive strips coated with "ABC shoot” show one complete inactivation of the pressure-sensitive adhesive layer; that too after 24 hours exposure at room temperature remains. A 20 minute warming to 100 ° C reactivates the Adhesive strength of the pressure-sensitive adhesive layer of the "ABC shoot” coated Samples completely.

Landscapes

  • Adhesives Or Adhesive Processes (AREA)
  • Adhesive Tapes (AREA)
  • Laminated Bodies (AREA)
  • Coupling Device And Connection With Printed Circuit (AREA)
  • Polishing Bodies And Polishing Tools (AREA)

Abstract

Substrate (1) coated on at least one side with a layer (2) of contact adhesive comprises an adhesion-reducing coating (3) over the adhesive layer, the coating material being volatile when heated to a temperature that does not irreversibly alter the substrate or adhesive layer. An Independent claim is also included for temporarily reducing the adhesive power of a layer of contact adhesive by applying a coating as above.

Description

Die Erfindung betrifft ein Substrat, das auf wenigstens einer Seite ganz oder teilweise mit einer Haftkleberschicht versehen ist, sowie ein Verfahren zum temporären Vermindern der Klebkraft einer Haftkleberschicht.The invention relates to a substrate which is based on at least one Site completely or partially provided with a pressure-sensitive adhesive layer is, as well as a method for temporarily reducing the Adhesive force of a pressure-sensitive adhesive layer.

Im Büroalltag sind sogenannte Haftnotizen weit verbreitet. Es handelt sich um Zettel aus einem Substrat (in der Regel Papier), die auf einer Seite in der Regel auf einer Teilfläche mit einem sogenannten repositionierbaren Kleber beschichtet sind. Der Zettel läßt sich mehrfach auf eine glatte Gegenfläche aufkleben und wieder ablösen, ohne daß eine wesentliche Minderung der Klebkraft eintritt.So-called sticky notes are widely used in everyday office life. It is a piece of paper from a substrate (usually paper), the on one side usually on a partial surface coated with a so-called repositionable adhesive are. The piece of paper can be repeatedly on a smooth counter surface stick on and peel off without a substantial Reduction of the adhesive force occurs.

Für die Herstellung solcher Haftnotizzettel wird eine Papierbahn zunächst mit dem repositionierbaren Kleber versehen und zu Rollen konfektioniert. Häufig erfolgt die Papierherstellung und das Aufbringen des Klebers einerseits sowie das Zuschneiden und Konfektionieren der Haftnotizzettel andererseits bei räumlich getrennten Unternehmen, daher wird das bereits mit Klebstoff versehene Substrat in der Regel in Form einer Rolle zum Konfektionierer transportiert. Beim Konfektionierer wird das Substrat von der Rolle abgezogen, anschließend wird es geschnitten und die sonstigen notwendigen Schritte zur Konfektionierung von Haftnotizzettelblöcken werden vorgenommen.For the production of such sticky notes is a paper web first provided with the repositionable adhesive and made into rolls. Often the paper production takes place and the application of the adhesive on the one hand and the cutting and finishing the sticky notes on the other hand with geographically separated companies, so that's already Adhesive substrate usually in shape a roll transported to the confectioner. At the confectioner the substrate is withdrawn from the roll, then it is cut and the other necessary Steps to make sticky note blocks performed.

In der WO-A-87105315 wird ein repositionierbares Substrat (zur Verwendung als Haftnotizzettel) offenbart, welches mit einer Klebmasse beschichtet ist, deren Oberfläche stellenweise inaktiviert ist. Dabei wird die Oberfläche der Klebmassenschicht teilweise durch nicht oder gering klebfähige (klebinaktive) Partikeln abgedeckt, so daß nur die zwischen diesen Partikeln frei liegenden Bereiche als klebaktive Bereiche zur Verfügung stehen.In WO-A-87105315, a repositionable substrate (for use as a sticky note), which is coated with an adhesive whose surface inactive in places. The surface of the adhesive layer is partially through covered or non-sticky (adhesive) particles, so that only the between These areas exposed areas are available as adhesive areas.

Der vorliegenden Erfindung liegt die Aufgabe zugrunde ein Substrat der eingangs beschriebenen Art zu schaffen, das eine verbesserte Handhabbarkeit bei der Herstellung und Weiterverarbeitung (beispielsweise zu Haftnotizzetteln) aufweist. Die Erfindung löst diese Aufgabe bei einem solchen Substrat durch folgende Merkmale:

  • auf die vom Substrat abgewandte Seite wenigstens eines Teils der Haftkleberschicht ist eine die Klebkraft mindernde Beschichtung aufgebracht,
  • das Material dieser Beschichtung ist flüchtig bei Erwärmung auf eine Temperatur, die Substrat und Haftkleberschicht nicht irreversibel verändert.
The present invention has for its object to provide a substrate of the type described above, which has improved handling in the manufacture and further processing (for example, sticky notes). The invention solves this problem with such a substrate by the following features:
  • on the side facing away from the substrate side of at least a portion of the pressure-sensitive adhesive layer, a adhesive force-reducing coating is applied,
  • the material of this coating is volatile when heated to a temperature that does not irreversibly change the substrate and pressure-sensitive adhesive layer.

Zunächst seien einige im Rahmen der Erfindung verwendeten Begriffe erläutert.First, some terms used in the invention explained.

Der Begriff Substrat bezeichnet jegliche Nutzunterlage zum Aufbringen eines Haftklebers. Insbesondere kann es sich bei dem Substrat um ein Papier oder Polymermaterial handeln, vorzugsweise handelt es sich beispielsweise um Notiz- oder Markierungszettel, Klebefolien oder dergleichen.The term substrate designates any useful document for Applying a pressure-sensitive adhesive. In particular, it may be the substrate is a paper or polymeric material, preferably are, for example, notes or markers, Adhesive films or the like.

Das Substrat ist auf wenigstens einer Seite ganz oder teilweise mit einer Haftkleberschicht versehen. Damit ist jegliche eigenklebrige Beschichtung gemeint, die eine Adhäsion des Substrates an einer Gegenfläche bewirken kann. Es kann sich um einen Permanentkleber handeln, in diesem Fall ist ein einmal aufgeklebtes Substrat nicht oder nur unter Veränderung oder Zerstörung des Substrats und/oder der Haftkleberschicht wieder ablösbar. Bevorzugt werden jedoch sogenannte repositionierbare Kleber, insbesondere repositionierbare Microkugelkleber mit Microkugeln aus eigenklebrigen Polymer, beispielsweise aus Polyacrylat, wie sie beispielsweise aus DE-A-2836319 bekannt sind.The substrate is wholly or partly on at least one side provided with a pressure-sensitive adhesive layer. This is any self-adhesive coating, which is an adhesion of the Can cause substrates on a mating surface. It may be to act a permanent adhesive, in this case is a once glued substrate not or only with change or destruction of the substrate and / or the pressure-sensitive adhesive layer removable again. However, preference is given to so-called repositionable Adhesive, in particular repositionable microsphere adhesive with microspheres made of self-adhesive polymer, for example from polyacrylate, as for example from DE-A-2836319 are known.

Repositionierbar bedeutet, daß ein solcher Haftkleber auf eine saubere, glatte Gegenfläche mehrfach aufgeklebt und wieder abgelöst werden kann, ohne auf dieser Gegenfläche nennenswerte Kleberückstände zu hinterlassen oder nennenswert an Klebkraft einzubüßen.Repositionable means that such a pressure-sensitive adhesive on a clean, smooth counter surface glued on several times and again can be replaced without appreciable on this counter surface Leave adhesive residue or appreciable adhesive strength losing.

Erfindungsgemäß ist nun vorgesehen, daß auf die vom Substrat abgewandte Seite wenigstens eines Teils der Haftkleberschicht eine die Klebkraft mindernde Beschichtung aufgebracht ist. Erfindungsgemäß bevorzugt ist eine Klebkraftminderung auf unter 50 cN/25 mm, vorzugsweise unter 35 cN/25 mm, weiter vorzugsweise unter 20 cN/25 mm, besonders bevorzugt unter 5 cN/25 mm.According to the invention it is now provided that on the substrate opposite side of at least part of the pressure-sensitive adhesive layer a coating that reduces the adhesive force is applied. According to the invention, a bond strength reduction to below is preferred 50 cN / 25 mm, preferably below 35 cN / 25 mm, more preferably below 20 cN / 25 mm, more preferably below 5 cN / 25 mm.

Der Begriff Klebkraft bezeichnet die nach der FINAT-Testmethode Nr. 2 (peel adhesion) gemessene Kraft, die erforderlich ist, um einen 25 mm breiten Papierstreifen, der mit der entsprechenden Haftkleberschicht versehen ist, von einer genormten Gegenfläche aus Stahl abzuziehen. Diese sogenannte peel adhesion wird gemessen unter einem Abzugswinkel von 90° bei einer Abzugsgeschwindigkeit von 300 mm/min. The term adhesive refers to the FINAT test method # 2 (peel adhesion) measured force required is to make a 25 mm wide strip of paper with the appropriate pressure-sensitive adhesive layer is provided by a standardized Remove counter surface from steel. This so-called Peel adhesion is measured at a peel angle of 90 ° at a withdrawal speed of 300 mm / min.

Der Begriff Beschichtung bezeichnet im Rahmen der vorliegenden Erfindung eine auf die dem Substrat abgewandte Seite der Haftkleberschicht aufgebrachte und deren Klebkraft mindernde Schicht aus einem Material, das bei Erwärmen auf eine Temperatur, die Substrat und Haftkleberschicht nicht irreversibel verändern, flüchtig ist. Das Material der Beschichtung verflüchtigt sich erfindungsgemäß bevorzugt bei einer Temperatur von 40°C oder mehr. Insbesondere wird derartiges Material bevorzugt, welches bei einer Temperatur von 40 - 200°C, vorzugsweise 50 - 150°C, weiter vorzugsweise 50 - 100°C flüchtig ist. Das Material der die Klebkraft mindernden Beschichtung ist erfindungsgemäß bevorzugt pulverförmig und ausgewählt aus der Gruppe bestehend aus Azodicarbonamiden, Ammoniumcarbonat und besonders bevorzugt Ammoniumhydrogencarbonat. Im Rahmen der vorliegenden Erfindung ist unter einer nicht irreversiblen Veränderung des Substrates und der Haftkleberschicht zu verstehen, daß nach dem Erwärmen des Substrates seine Verwendung für den vorbestimmten Zweck gewährleistet ist und die Haftkleberschicht ausreichend Klebekraft aufweist, um Adhäsion des Substrates an der vorbestimmten Gegenfläche zu bewirken.The term coating designates in the context of the present Invention on the side facing away from the substrate of the Pressure-sensitive adhesive layer applied and their adhesive force-reducing Layer of a material which, when heated to a temperature the substrate and pressure-sensitive adhesive layer are not irreversible change, is fleeting. The material of the coating volatilizes According to the invention preferably at a temperature of 40 ° C or more. In particular, such material is preferred which at a temperature of 40 - 200 ° C, preferably 50 - 150 ° C, more preferably 50 - 100 ° C volatile is. The material of the adhesion-reducing coating is according to the invention preferably in powder form and selected from the group consisting of azodicarbonamides, ammonium carbonate and more preferably ammonium bicarbonate. As part of The present invention is under a non-irreversible Change the substrate and the pressure-sensitive adhesive layer too understand that after heating the substrate its use is guaranteed for the predetermined purpose and the Pressure-sensitive adhesive layer has sufficient adhesive power to adhesion to effect the substrate on the predetermined mating surface.

Die Inaktivierungsmenge der auf der Haftkleberschicht haftenden Beschichtung ist abhängig von dem Substrat und Art und Menge der auf dem Substrat befindlichen Haftkleberschicht; ferner von Art und Beschaffenheit des verwendeten Inaktivierungsmaterials. Bevorzugt sind Mengen des Inaktivierungsmaterials von wenigstens 15 g/qm Haftkleberfläche, weiter bevorzugt wenigstens 25 bzw. 35 g/qm.The inactivation amount of the adhesive on the pressure-sensitive adhesive layer Coating is dependent on the substrate and type and Amount of pressure-sensitive adhesive layer on the substrate; also of the type and nature of the inactivation material used. Preferred are amounts of the inactivation material of at least 15 gsm of pressure-sensitive adhesive surface, more preferred at least 25 or 35 gsm.

Ein häufig verwendeter repositionierbarer Haftkleber ist ein Polyacrylat-Mikrokugelhaftkleber, wie er beispielsweise in DE-C-28 36 319 beschrieben und bei unter der Marke "Info-Notes" verwendeten Haftnotizzetteln verwendet wird. Bei diesem Produkt beträgt das Kleberauftragsgewicht etwa 5 g/qm. Zur Inaktivierung dieser Kleberschicht sind etwa 15 g/qm kristallines Ammoniumhydrogencarbonat erforderlich, wie es unter der Bezeichnung "ABC-Trieb" erhältlich ist.A commonly used repositionable pressure sensitive adhesive is a Polyacrylate microsphere pressure-sensitive adhesive, such as in DE-C-28 36 319 and under the mark "Info-Notes" used sticky notes is used. In this Product, the adhesive application weight is about 5 gsm. For inactivation of this adhesive layer about 15 g / sqm are crystalline Ammonium hydrogen carbonate required as it is the name "ABC shoot" is available.

Der Kern der Erfindung besteht darin, die Klebkraft einer bereits funktionell wirksamen Kleberschicht, mit der ein Substrat versehen ist, durch Beschichten mit einem beim Erwärmen flüchtigen Material vorübergehend so lange zu vermindern, bis durch ein einfaches Erwärmen der Beschichtung die Klebekraft der Klebeschicht (mindestens partiell) wieder hergestellt wird. Dieses Konzept der Erfindung hat mehrere Vorteile.The essence of the invention is the bond strength of an already functionally effective adhesive layer, with the one Substrate is provided by coating with a while heating temporarily reduce volatile material for as long as until by simply heating the coating Adhesive strength of the adhesive layer (at least partially) restored becomes. This concept of the invention has several advantages.

Der besondere Vorteil der vorliegenden Erfindung liegt in der Erleichterung der Verarbeitung und Konfektionierung von bereits mit einer Haftkleberschicht versehenem Substrat. Nach dem Aufbringen des Haftklebers kann das Substrat somit problemlos in Rollen konfektioniert und auch wieder abgerollt werden, ohne daß die Haftkleberschicht Probleme bei der Handhabung bereitet. Auch das anschließende Zuschneiden und Konfektionieren wird durch die inaktivierte Haftkleberschicht erheblich erleichtert. Nach dem Abschluß der entsprechenden Verarbeitungs- und Konfektionierschritte kann durch Erwärmen des fertigen Produktes dessen Klebkraft wieder hergestellt werden.The particular advantage of the present invention is in the Facilitate the processing and packaging of already with a pressure-sensitive adhesive layer provided substrate. To the application of the pressure-sensitive adhesive, the substrate can thus easily Assembled in rolls and also unrolled again be without the pressure-sensitive adhesive layer handling problems prepares. Also the subsequent cutting and finishing is due to the inactivated pressure-sensitive adhesive layer considerably relieved. After the completion of the corresponding Processing and finishing steps can be done by heating of the finished product its bond strength restored become.

Eine andere denkbare Anwendung sind Selbstklebefolien mit einer Permanenthaftkleberschicht, die vor dem endgültigen Aufkleben auf der Gegenfläche positionierbar sein sollen. Beispielhaft seien Klebefolien für Kraftfahrzeugteile genannt. Diese können bei inaktivierter Haftkleberschicht genau positioniert und anschließend beispielsweise durch ein Warmluftgebläse (durch Reaktivieren der Haftkleberschicht) fixiert werden.Another conceivable application is self-adhesive films with a Permanent pressure-sensitive adhesive layer, before the final sticking should be positionable on the counter surface. exemplary be adhesive films for automotive parts mentioned. These can be precisely positioned when the pressure-sensitive adhesive layer is deactivated and then, for example, by a hot air blower (by reactivating the pressure-sensitive adhesive layer) fixed become.

Gegenstand der Erfindung ist ferner ein Verfahren zum temporären Vermindern der Klebekraft einer Haftkleberschicht bei dem auf die Haftkleberschicht eine die Klebkraft mindernde Beschichtung aufgebracht wird und das Material dieser Beschichtung sich verflüchtigt bei Erwärmen auf eine Temperatur, die die Haftkleberschicht nicht irreversibel verändert. Das Aufbringen dieser Beschichtung ist bei Verwendung von pulverförmigen Beschichtungsmaterial durch einfaches Aufstreichen, Aufstäuben oder auch elektrostatisches Auftragen möglich.The invention further relates to a method for temporary Reduction of the adhesive force of a pressure-sensitive adhesive layer on the pressure-sensitive adhesive layer, a the adhesive force-reducing Coating is applied and the material of this coating volatilizes upon heating to a temperature which does not irreversibly change the pressure-sensitive adhesive layer. The application of this coating is when using powdered coating material by simply brushing, Sputtering or electrostatic application possible.

Die Erfindung wird nachfolgend anhand von Beispielen und einer Zeichnung erläutert. Die Zeichnung zeigt einen Querschnitt durch ein erfindungsgemäßes Substrat. Das Substrat 1 ist mit einer Haftkleberschicht 2 einseitig beschichtet, auf der auf der dem Substrat abgewandten Seite eine den Kleber inaktivierende Beschichtung 3 aufgebracht ist.The invention is described below by way of examples and a Drawing explained. The drawing shows a cross section by a substrate according to the invention. The substrate 1 is coated on one side with a pressure-sensitive adhesive layer 2, on the on the side facing away from the substrate one the adhesive inactivating coating 3 is applied.

Beispiel 1example 1

Ermittlung des Beschichtungsgewichtes zur vollständigen Inaktivierung einer Haftkleberschicht.Determination of the coating weight for complete inactivation a pressure-sensitive adhesive layer.

Auf einen vollständig mit einer Haftkleberschicht (5,2 g/m2 eines Polyacrylat-Mikrokugelklebers gemäß DE-C-28 36 319) beschichteten Streifen der Größe 200 mm x 25 mm wurde "ABC-Trieb", ein kristallines Ammoniumhydrogencarbonat in einer Reinheit von etwa 98 %, aufgetragen und mittels Pinsel über die gesamte Haftkleberschicht verteilt. Überschüssiges "ABC-Trieb", welches nicht an der Haftklebeschicht haftete, wurde abgeschüttelt. Die in Tabelle 1 aufgeführten anhaftenden Inaktivierungsmengen bei 10 Proben wurden durch Differenzwägung ermittelt. Eine vollständige Inaktivierung der Klebeeigenschaft der Haftklebeschicht wird bei einer durchschnittlichen Beschichtungsmenge von etwa 15 g "ABC-Trieb" pro m2 Klebefläche erreicht. Probe Nr. anhaftende Menge "ABC-Trieb" (mg) g/m2 Klebefläche 1 43,4 8,7 2 58,1 11,6 3 82,4 16,5 4 109,4 21,9 5 90,3 18,1 6 80,9 16,2 7 76,1 15,2 8 70,1 14,0 9 54,0 10,8 10 89,4 17,9 Mittelwert 75,4 15,1 ± 3,9 On a completely coated with a pressure-sensitive adhesive layer (5.2 g / m 2 of a polyacrylate microsphere adhesive according to DE-C-28 36 319) strips of size 200 mm x 25 mm was "ABC shoot", a crystalline ammonium bicarbonate in a purity of about 98%, applied and spread over the entire pressure-sensitive adhesive layer by means of a brush. Excess "ABC shoot" which did not adhere to the pressure-sensitive adhesive layer was shaken off. The adherent inactivation amounts for 10 samples listed in Table 1 were determined by differential weighing. Complete inactivation of the adhesive property of the pressure-sensitive adhesive layer is achieved with an average coating amount of about 15 g "ABC shoot" per m 2 of adhesive area. Sample No. Adhering amount "ABC shoot" (mg) g / m 2 adhesive surface 1 43.4 8.7 2 58.1 11.6 3 82.4 16.5 4 109.4 21.9 5 90.3 18.1 6 80.9 16.2 7 76.1 15.2 8th 70.1 14.0 9 54.0 10.8 10 89.4 17.9 Average 75.4 15.1 ± 3.9

Beispiel 2Example 2

Ermittlung der Klebekraft der durch "ABC-Trieb" beschichteten, inaktivierten und durch Erwärmen reaktivierten Haftklebeschicht im Vergleich zu der Klebekraft unbeschichteter Kontrollklebeschichten.Determination of the adhesive force of the coated by "ABC shoot", inactivated and heated by reactivation pressure-sensitive adhesive layer compared to the adhesive power of uncoated control adhesive coatings.

Zur Ermittlung der Klebekräfte wurden in Beispiel 1 beschriebene Haftklebestreifen mit 162 mg "ABC-Trieb" beschichtet und deren Klebekraft nach der FINAT-Testmethode Nr. 2 im Vergleich zu den unbeschichteten Kontrollklebestreifen bestimmt. Die in Tabelle 2 zusammengefaßten Werte stellen jeweils den Mittelwert dreier einzelner Proben dar. Versuchsbedingungen Klebekraft (cN/25 mm) unbeschichtet (Kontrolle) mit "ABC-Trieb" beschichtet Ausgangswert 24 0 nach 24 h bei RT 25 0 nach 20 min. bei 100 °C 27 24 To determine the adhesive forces, pressure-sensitive adhesive strips described in Example 1 were coated with 162 mg of "ABC shoot" and their adhesive strength was determined by the FINAT test method No. 2 in comparison to the uncoated control adhesive strips. The values summarized in Table 2 each represent the average of three individual samples. test conditions Adhesive force (cN / 25 mm) uncoated (control) coated with "ABC shoot" output value 24 0 after 24 h at RT 25 0 after 20 min. at 100 ° C 27 24

Mit "ABC-Trieb" beschichtete Haftklebestreifen zeigen eine vollständige Inaktivierung der Haftkleberschicht; die auch nach 24stündiger Exposition bei Raumtemperatur erhalten bleibt. Eine 20minütige Erwärmung auf 100 °C reaktiviert die Klebekraft der Haftkleberschicht der mit "ABC-Trieb" beschichteten Proben vollständig.Adhesive strips coated with "ABC shoot" show one complete inactivation of the pressure-sensitive adhesive layer; that too after 24 hours exposure at room temperature remains. A 20 minute warming to 100 ° C reactivates the Adhesive strength of the pressure-sensitive adhesive layer of the "ABC shoot" coated Samples completely.

Claims (13)

  1. Substrate which is entirely or partly provided on at least one side with a contact adhesive layer (2), characterised in that a coating (3) which reduces the adhesive strength is applied to the side of at least a part of the contact adhesive layer (2) which is remote from the substrate (1), and that the material of this coating (3) is volatile when heated to a temperature which does not irreversibly change the substrate (1) and the contact adhesive layer (2).
  2. Substrate according to Claim 1, characterised in that the material of the coating (3) which reduces the adhesive strength is volatile at a temperature of 40°C or above.
  3. Substrate according to Claim 2, characterised in that the material of the coating (3) which reduces the adhesive strength is volatile at a temperature of 40 - 200°C, preferably 50 - 150°C, more preferably 50 - 100°C.
  4. Substrate according to any one of Claims 1 to 3, characterised in that the material of the coating (3) which reduces the adhesive strength is in powder form.
  5. Substrate according to any one of Claims 1 to 4, characterised in that the material of the coating (3) which reduces the adhesive strength is selected from the group consisting of azodicarbonamides, ammonium carbonate and ammonium hydrogencarbonate.
  6. Substrate according to any one of Claims 1 to 5, characterised in that the contact adhesive layer (2) comprises a permanent adhesive.
  7. Substrate according to any one of Claims 1 to 5, characterised in that the contact adhesive layer (2) comprises a repositionable adhesive.
  8. Substrate according to Claim 7, characterised in that the repositionable adhesive is a microsphere adhesive.
  9. Substrate according to any one of Claims 1 to 8, characterised in that the adhesive strength of the contact adhesive layer (2) on the side which is remote from the substrate (1) is less than 50 cN/25 mm, preferably less than 35 cN/25 mm, more preferably less than 20 cN/25 mm, more preferably less than 5 cN/25 mm.
  10. Substrate according to any one of Claims 1 to 8, characterised in that the base material of the substrate (1) is a paper or polymer material.
  11. Substrate according to any one of Claims 1 to 10, characterised in that it is rolled up on a roll.
  12. Method for temporarily reducing the adhesive strength of a contact adhesive layer (2), characterised in that a coating (3) which reduces the adhesive strength is applied to this contact adhesive layer (2), and that the material of this coating (3) is volatile when heated to a temperature which does not irreversibly change the contact adhesive layer (2).
  13. Method according to Claim 12, characterised in that the material of the coating (3) which reduces the adhesive strength is in powder form, and this coating (3) is applied by spreading, dusting on or electrostatic deposition.
EP02021042A 2002-09-20 2002-09-20 Substrate with an adhesive layer Expired - Lifetime EP1400370B1 (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
PT02021042T PT1400370E (en) 2002-09-20 2002-09-20 SUBSTRATE WITH A TAIL LAYER OF CONTACT
ES02021042T ES2246366T3 (en) 2002-09-20 2002-09-20 SUBSTRATE WITH A LAYER OF CONTACT ADHESIVE.
AT02021042T ATE300432T1 (en) 2002-09-20 2002-09-20 SUBSTRATE WITH A LAYER OF ADHESIVE
EP02021042A EP1400370B1 (en) 2002-09-20 2002-09-20 Substrate with an adhesive layer
SI200230186T SI1400370T1 (en) 2002-09-20 2002-09-20 Substrate with an adhesive layer
DK02021042T DK1400370T3 (en) 2002-09-20 2002-09-20 Substrate with contact adhesive layer
DE50203772T DE50203772D1 (en) 2002-09-20 2002-09-20 Substrate with a pressure-sensitive adhesive layer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP02021042A EP1400370B1 (en) 2002-09-20 2002-09-20 Substrate with an adhesive layer

Publications (2)

Publication Number Publication Date
EP1400370A1 EP1400370A1 (en) 2004-03-24
EP1400370B1 true EP1400370B1 (en) 2005-07-27

Family

ID=31896894

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02021042A Expired - Lifetime EP1400370B1 (en) 2002-09-20 2002-09-20 Substrate with an adhesive layer

Country Status (7)

Country Link
EP (1) EP1400370B1 (en)
AT (1) ATE300432T1 (en)
DE (1) DE50203772D1 (en)
DK (1) DK1400370T3 (en)
ES (1) ES2246366T3 (en)
PT (1) PT1400370E (en)
SI (1) SI1400370T1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3415909B1 (en) 2017-06-16 2021-08-11 Euroimmun Medizinische Labordiagnostika AG Diagnosis of a neuroautoimmune disease

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4166152B1 (en) 1977-08-17 1999-05-18 Minnesota Mining & Mfg Tacky polymeric microspheres
WO1987005315A1 (en) * 1986-02-26 1987-09-11 Erich Pagendarm Article with adhesive coating and process for its production
US6268032B1 (en) * 1997-10-03 2001-07-31 3M Innovative Properties Company Repositionable note sheets and method of formation thereof

Also Published As

Publication number Publication date
DK1400370T3 (en) 2005-11-28
PT1400370E (en) 2005-11-30
DE50203772D1 (en) 2005-09-01
ES2246366T3 (en) 2006-02-16
ATE300432T1 (en) 2005-08-15
EP1400370A1 (en) 2004-03-24
SI1400370T1 (en) 2005-12-31

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