Tesa Se

Tesa Ag

Beiersdorf Ag

Daimler Chrysler Ag

Arne Koops

Klaus Keite-Telgenbüscher

Sven Reiter

Uwe Schümann

Hermann Neuhaus-Steinmetz

Kirstin Weiland

Olga Kirpicenok

Thomas Schubert

Dennis Perlbach

Sarah Reich

Christian Kreft

Klaus K&uuml;lper

Klaus Kulper

Bernd Lühmann

Axel Burmeister

Sebastian Dietze

Markus Eikmeier

Frank Hannemann

Jochen Stähr

Jochen St&auml;hr

Bernhardt Dilz

Ronald Pfaff

Gero Maatz

Alexander Herrmann

Bernd Bunde

Petra Lawrence

Philipp Preuss

Ulrich Ofer

Petra Lohmann

Manuel Bendeich

Stefan Kramp

Norio Arai

Olaf Postel

Michael Blümel

Detlef Groth

Hans-Christian Riekhof

Elma Claret

Michael Bluemel

Marcel HÄHNEL

Laminates designed and equipped to be separated after long-term bonding are provided. The laminates comprise a first pressure sensitive adhesive layer, a separation layer, and a second pressure sensitive adhesive layer. The separation layer comprises a laser-sensitive pigment which at the same time is coloring, and so preferably a black coloration is produced, and consists of a cured coating material, preferably an electron beam-cured or UV-cured coating material, which is at least partly removable by laser irradiation, wherein the first pressure sensitive adhesive layer and/or the second pressure sensitive adhesive layer are laser beam-translucent.

Partable laminate and method for parting long-term bonds

Method of adhesively bonding two surfaces by means of a reactive adhesive film system comprising at least two adhesive films (F1 and F2), each comprising at least one reactive component (R1 and R2), adhesive bonding being effected by a reaction which requires the presence of both reactive components (R1 and R2), wherein, prior to adhesive bonding, a separating layer (T) which is impermeable to the reactive components is provided between the adhesive films which are to be brought into contact with one another for the reaction, and the separating layer (T) is removed at least in part by means of a laser in order to effect bonding, so that the adhesive films (F1 and F2) come into direct contact with one another and the reaction begins in the presence of both reactive components (R1 and R2), and reactive adhesive film system for use in this method.

Reactive two-component adhesive system in the form of a film and bonding method

A double-sided adhesive tape having a first outer impact-adhesive side and a second outer side that can be heat activated, comprising an at least two-layer product structure comprising the layers A and B. Layer A is an impact-adhesive layer chemically cross-linked by means of thermal initiation or an impact-adhesive carrier layer chemically cross-linked by means of thermal initiation. Layer B is a layer on the basis of a thermoplastic plastic. Layer A and layer B are in direct contact with each other, and the surface of layer B that is in direct contact with layer A has been corona- or plasma-pretreated. The double-sided adhesive tape is characterized in that the corona or plasma pretreatment is performed in an atmosphere comprising nitrogen, carbon dioxide, or a noble gas or a mixture of at least two of said gases.

Double-sided adhesive tape having a first outer impact-adhesive side and a second outer side that can be heat activated

Adhesive tape having at least two layers A and B laminated directly on one another, with at least one or both layers A or B being an adhesive, and the interfaces of the layers A and B laminated on one another being subjected to a physical method, the physical method being selected from the group consisting of corona discharge, dielectric barrier discharge, flame pretreatment and plasma treatment, before the layers are laminated to one another, with the two methods differing from one another.

Adhesive tape, preferably self-adhesive tape, comprising of at least two layers A and B laminated directly on one another, with at least one or both layers A or B being an adhesive

A double-sided adhesive tape useful for adhesively bonding articles composed of thermoplastic polymer, of EPDM, or of another rubberlike material is provided, having a first outer, pressure-sensitive adhesive side and a second outer, thermally-activatable side, and that comprises an at least dual-layered product construction consisting of layers A and B, layer A being a pressure-sensitive adhesive layer that is chemically cross-linked by thermal initiation, or being a pressure-sensitively adhesive carrier layer chemically cross-linked by thermal initiation, layer B being a thermoplastic synthetic material-based layer, layers A and B being in direct contact with one another, and the surface of layer A, which is in direct contact with layer B, having been corona or plasma pre-treated. The corona or plasma pre-treatment takes place in an atmosphere of nitrogen, carbon dioxide or a noble gas, or a mixture of at least two of these gases.

Double-sided adhesive tape comprising a first outer, pressure-sensitive adhesive side, and a second outer side which can be thermally-activated

A process for preparing titanium carbide using a pigment formulation having at least one titanium compound and a carbon compound and/or elemental carbon, the pigment formulation reacting under laser irradiation to form TiC.

Process for preparing titanium carbide

Disclosed is a method for inscribing or marking surfaces (), especially metal surfaces. In said method, the surface () that is to be inscribed or marked is coated with an absorption promoter () in a first step, whereupon a high-energy beam (), e.g. a laser beam, which colors the surface () as a result of the interaction with the absorption promoter by means of a temperature increase, is applied to surface elements that re to be inscribed or colored.

Method for inscribing or marking surfaces

The present invention provides a method of marking or inscribing a workpiece () with high-energy radiation, more particularly with a laser beam (), the workpiece () being transparent for the radiation wavelength, and a polymer matrix () being disposed in the vicinity of the workpiece () in such a way that the radiation passes through the workpiece () before it impinges on the polymer matrix (), characterized in that disposed between the polymer matrix () and the workpiece () is a film () of liquid which is in contact with the polymer matrix () and with the workpiece ().

Method of marking or inscribing a workpiece

The present invention provides a method of and apparatus for marking or inscribing a workpiece () with high-energy radiation, more particularly with a laser beam (), the workpiece () having a light-scattering surface () and the material of the workpiece () being transparent for the radiation wavelength, and a polymer matrix () being disposed on the workpiece () in such a way that the radiation passes through the workpiece () and its light-scattering surface () before impinging on the polymer matrix (), characterized in that the light-scattering surface () of the workpiece () is wetted with a liquid or viscoelastic medium ().

According to the present invention, a method of working material with high-energy radiation is provided, wherein a polymer matrix () is irradiated with high-energy radiation, in particular with a laser beam (), wherein the radiation is focused onto a focal point () and the focal point () is set such that the focal point () lies behind the surface () of the polymer matrix () facing the radiation, and material removal is brought about at the polymer matrix (), and consequently a reaction space () is created within the polymer matrix ().

Method of working material with high-energy radiation

A method of applying a durable process mark to a glass article using a laser. A transfer sheet is applied to the glass substrate, the transfer sheet includes a carrier layer with a first adhesive layer, adhered partially to a bottom side of the carrier layer. On the face of the carrier layer there are a first and a second pigment layer. The transfer sheet is lased, forming a durable process mark in the glass article.

Method of applying a durable process mark to a product, more particularly glass

Pigment layer intended particularly for the permanent marking of glass, based on a polymer matrix which reacts predominantly with pulverization to a high-energy beam, more particularly to laser irradiation, comprising at least one titanium donor and a carbon donor which provides free carbon under energy irradiation.

Pigment layer and method of permanently scribing a substrate by means of high-energy radiation

Method for producing a laser-printable film which comprises printing an engraving layer comprising a UV-curable coating onto a support film, applying an electron-beam curable coating on top of the engraving layer, and then curing the film by electron irradiation.

Method for producing a laser-printable film

A multilayer laser transfer film for permanently inscribing parts made from at least one backing layer, where on at least part of the underside of the backing layer there is a first adhesion layer, characterized in that, on the backing-layer side of the laser transfer film, this being the location of the first adhesion layer, there are at least two pigment layers, preferably a first pigment layer applied to at least part of the material and comprising at least one glass flux pigment, and a second pigment layer applied to at least part of the material and comprising at least one laser-sensitive pigment.

Multilayer laser transfer film for permanently inscribing parts

The invention relates to a multi-layer laser transfer film for the permanent labeling of components, comprising at least one support layer, whereby a first adhesive layer is at least partly provided on the underside of the support layer, characterised in that on the side of the support layer for the laser transfer film on which the first adhesive layer is provided, at least two pigment layers containing a laser-sensitive pigment are at least partly provided, whereby the concentration of the laser-sensitive pigment in the pigment layers varies.

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Neu-Lankau, Germany

Arne Koops