Flint Group Germany Gmbh

Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung E.V.

Xsys Germany Gmbh

Matthias Beyer

Armin Becker

Thomas Telser

Uwe Stebani

Jörn Probst

Andreas Reifschneider

Denis Riewe

Daniel Fleischer

Ruth Houbertz-Krauss

Peter Fronczkiewicz

Claudia May

Torben Wendland

Thomas Stichel

Anja Wundling

Isabel Schlegel

Joern Probst

Thorben Wendland

Peter J Fronczkiewicz

A photopolymerisable relief precursor includes a dimensionally stable carrier, and a photopolymerisable relief-forming layer at least containing a crosslinkable elastomeric binder, an ethylenically unsaturated monomer, a migration-capable, surface-active additive, a photoinitiator activatable with UVA light and a photoinitiator activatable with UVC light. A method for producing a relief structure.

Photopolymerizable relief precursor having adjustable surface properties

A digitally imageable, photopolymerizable relief precursor at least comprising, arranged one above another in the order stated,

Relief precursor having low cupping and fluting

The invention relates to a method for producing pictorial relief structures on a layer construction. The method comprises the provision of a layer construction having a substrate layer. After this, at least one fluid containing at least one first reactive component is applied pictorially to the substrate, wherein the pictorial application takes place in the form of a plurality of droplets with a droplet volume of less than 2 &#x3bc;l, and wherein the droplets are positioned pictorially. After this, there is an at least partial diffusing of the at least one first reactive component into the substrate layer for a predefined exposure time and/or an at least partial diffusing of at least one second reactive component into the pictorially positioned droplets of fluid for a predefined exposure time, wherein the substrate layer comprises the at least one second reactive component. The created relief is then fixed under the influence of heat and/or radiation via a reaction involving the first reactive component and/or the second reactive component. Further aspects of the invention relate to a pictorial relief structure produced according to the method and to the use of the pictorial relief structure as a printing form, as a microfluidic component, as a microreactor, as a phoretic cell, as a light-controlling element for color representation, as photonic crystals or as flexible parts of items of clothing.

Method for producing pictorial relief structures

The invention relates to a method for generative production of relief printing plates, wherein a support with a polymeric substrate layer and a laser-ablatable mask layer is provided, the polymeric substrate layer containing a first binder. A mask with openings corresponding to pixels is produced by imagewise laser ablation of the mask layer. A liquid containing a reactive monomer is then applied over the surface of the mask-covered polymeric substrate layer, and the liquid or the reactive monomer diffuses through the openings of the mask into the polymeric substrate layer for a defined exposure time so as to form a relief. The excess liquid or the excess monomer and optionally the mask are removed from the surface, and the resulting relief is fixed by crosslinking.

Method for generative production of relief printing plates by monomer diffusion through an integral mask layer

A digitally imageable, photopolymerizable flexographic printing element that includes, disposed one above another in order, at least a dimensionally stable support, at least one photopolymerizable, relief-forming layer having a layer thickness of 300-6000 &#x3bc;m, including at least one elastomeric binder, an ethylenically unsaturated monomer, and a photoinitiator or a photoinitiator system, an oxygen-blocking barrier layer which is transparent to UVA light and has a layer thickness of 0.3-5 &#x3bc;m, a laser-ablatable mask layer having a layer thickness of 0.3-5 &#x3bc;m, including at least one elastomeric binder and a material which absorbs UV/VIS light, and a removable outer film, wherein the at least one relief-forming layer, the barrier layer and the mask layer are soluble or dispersible in an organic solvent, and the barrier layer includes at least one oxygen-blocking binder and an oligomeric or polymeric basic adhesion component.

Digitally imageable flexo-printing plate with integrated barrier layer

A method for producing flexographic printing plates. The method has the following steps:

Method for producing a flexographic printing frame through multiple exposures using UV LEDS

Digitally imagable flexographic printing elements for producing flexographic printing plates, which comprise an organically soluble relief-forming layer, a water-soluble barrier layer for oxygen, and a water-soluble laser-ablatable mask layer. A method for producing flexographic printing plates using such flexographic printing elements, which comprises a two-stage washout procedure using aqueous and organic washout media.

Digitally exposable flexographic printing element and method for producing flexographic printing plates

Digital imageable flexographic printing elements for producing flexographic printing plates, which are developable using hydrocarbon-comprising washout media and which, between the photopolymerizable layer and the digital imageable layer, have a polar, ultrathin, oxygen-blocking barrier layer. Methods for producing flexographic printing plates using such digital imageable flexographic printing elements, by imaging, exposing, washing out, drying, and post-treating, the washout being formed by means of hydrocarbon-comprising washout media.

Flexographic printing element which can be digitally imaged and has a polar, ultra-thin barrier layer

The present invention pertains to a process for producing three-dimensional, self-supporting and/or substrate-supported formed pieces or structures on surfaces by means of site-selective solidification of a liquid to pasty, organic or organically modified material within a bath consisting of this material by means of two- or multiphoton polymerization, whereby the material has at least one compound that has both an organic radical polymerizable via two-photon or multiphoton polymerization and a biocompatible, biodegradable or bioresorbable group, and/or wherein the bath material additionally contains groups or radicals, which are available for an inorganic crosslinking or which are already inorganically crosslinked, providing that both an organic radical polymerizable via two-photon or multiphoton polymerization and a biocompatible, biodegradable or bioresorbable group must be contained in the material. The formed pieces or surface structures according to the present invention are suitable as matrices for binding live cells, which can be multiplied after that or stimulated for the production of specific substances. They can be used, e.g., as an extracorporeal matrix or as an implant.

Method for generating biocompatible three-dimensional objects or surfaces by laser irradiation, such objects, the use thereof and starting materials for the method

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Pfinztal-Berghausen, Germany

Matthias Beyer