Abstract: In a method for applying a surface structure to a solid body, a structured surface is placed directly or indirectly onto the surface of the solid body and the structure of this structured surface is reproduced in the surface of the solid body, in that an explosive structured layer is arranged on the surface of the solid body and the structure of the explosive structured layer is explosively disseminated into the surface of the solid body. According to the invention, the surface of the solid body is provided with a surface pre-structure before the actual dissemination, at least in regions, wherein the structure of the explosive structured layer is disseminated on at least one partial region of the surface pre-structure so that the surface structure produced results from overlapping of the surface pre-structure with the explosively disseminated structure.

Abstract: A method for applying a surface structure to a solid body, wherein a structured surface is placed directly or indirectly onto the surface of the solid body and the structure of this structured surface is reproduced in the surface of the solid body, in that an explosive structured layer having the structured surface is arranged on the surface of the solid body and in that the structure of the explosive structured layer is disseminated by ignition of the same in the surface of the solid body; and/or at least one moulded structured layer having the structured surface is arranged on the surface of the solid body and is disseminated in the surface of the solid body by igniting a separate explosive layer, According to the invention the surface of the solid body is provided with a surface pre-structure before the actual dissemination, at least in regions, wherein the structure of the explosive structured layer or the moulded structured layer is disseminated on at least one partial region of the surface pre-struc

Abstract: The invention concerns a composition for the production of shaped bodies, consisting of polymer lignin, shellac and natural fibers and also a method for the production of shaped bodies from such a composition via production of a shaped body through extrusion.

Abstract: For producing a granulated intermediate product which consists of a fine-particle thermoplastic or thermoelastic polymer and substantially inert fillers for further processing into plastic shaped bodies through thermoplastic processing methods it is proposed to mix the polymer in the form of powder or particles with the fillers and compact the powder mixture without plastification of the polymer exclusively under mechanical pressure into pourable agglomerates with larger grain size. Such an agglomerate can be processed into shaped bodies in the same manner as a conventional plastic granulated material, wherein thermal damage to the fillers and the molecular structure of the polymer is reliably prevented during production of the intermediate product and extremely high fill fractions can be achieved.

Abstract: A plastic material made from a polymer blend, is characterized in that said material contains at least one lignin-based natural polymer, in particular based on alkali lignin produced during the extraction of cellulose, and at least one other synthetic and/or natural polymer which increases the impact resistance, proteins excluded. The inventive plastic material has excellent characteristics. It is biodegradable due to the natural polymer content and has, to a considerable extent, an ecologically neutral CO2 balance. The polymer blend can be used advantageously in place of wood or wood materials.

Abstract: A method for producing a substantially rod-shaped composite body (6) consists of a core (4) enveloped by at least one polymer, according to which the plasticized polymer (5) is extruded onto the core (4). At least one natural polymer is used and a sliding agent on the basis of native oils and/or waxes is added before or during extrusion. The method is used for the production of writing, drawing, cosmetic pencils.

Abstract: In order to manufacture compound composite bodies having at least two lay with a support material made completely or substantially from a polymer and with a porous layer firmly connected thereto, a substantially microwave-permeable polymer is utilized for the support material and a polymer having microwave absorbing properties is utilized for the porous layer. The polymer for the porous layer, treated with foaming agent, is heated with microwave energy up to the decomposition temperature of the foaming agent. The resulting polymer foam is sufficiently heated using microwave energy that the support material, at its bordering layer adjacent the foamed polymer, is sufficiently melted substantially due to heat conduction out of the foamed layer that, subsequent to cooling, a firm composite between the support material and the foamed polymer is effected.

Abstract: In order to enlarge the surface of particles which absorb liquids at least o a limited extent, the particles are exposed to a liquid or to a humid atmosphere containing this liquid at least until said liquid has penetrated into the area of the particles close to their surface, and the liquid-containing particles are then irradiated with micro-waves until the penetrated liquid evaporates. The surface of the particles is torn down to the depth of penetration of the liquid and thus enlarged, or the particles break up, creating small broken pieces with an irregular and enlarged surface.

Abstract: The present invention relates to a method for surface structuring of workpieces, in particular molds for plastics processing, erosion electrodes or the like, in which a structured surface is applied to an unstructured workpiece surface in order to map the structure into the workpiece surface. In order to provide a method which can be carried out more quickly, and which involves no environmentally hazardous process steps, it is proposed that a structure layer which has the structured surface is arranged between an explosive layer and the workpiece surface, and the structure is forced into the workpiece surface by detonating the explosive layer or a surface-structured explosive layer is arranged on a workpiece surface, and the structure is embossed onto the workpiece by detonating the explosive layer.

Abstract: A method and apparatus for the treatment of fiber pieces, with which the fiber pieces (24) in a gas/solid mix are fed through a transport line (11) into a heating device (14). Inside the heating device (14) the exposed ends of the fiber pieces (24) are rounded off and/or thickened. Subsequent to the treatment in the heating device the treated fibers (25) flow into a feed line and from there into a separating device (18), in which the gas/solid mix is separated. The fiber bits produced according to the invented method improve the mechanical quality and characteristics of fiber composite materials considerably. By utilizing the described device the invented method can be carried out most economically. (FIG.