Abstract: A single-layer or multi-layer plastic skin is formed into a covering for coated objects, such as trim parts of a motor vehicle. Regions in the plastic skin include switching, sensor, or transmission functionality.

Abstract: In a method for producing three-dimensionally structured surfaces of objects as a reproduction of an original surface, the topology of the original surface is determined, and the data are used for controlling a machining tool. The determined topology and a random topology of a reproduction surface are brought closer to one another via a series of proximity comparisons until all items of height information of the reproduction surface are successively replaced by items of height information from the original surface, and that once an established similarity between the topologies of the reproduction surface and the original surface is obtained, the items of height information of the reproduction surface are provided for controlling the machine tool serving to machine the surface of the object.

Abstract: A textured, layered mold-formed body is produced with a foil laminate in which a top foil of at most partially crosslinked polymer materials and a sub-foil containing a polymer foam material with a density between 35 and 120 grams per liter and a gel content of less than 80 percent are laminated together. The foil laminate is embossed with a texture and treated with electron beams to give the texture enough stability for a subsequent deep-drawing step in which the mold-formed body is produced.

Abstract: A single-layer or multi-layer plastic skin is formed into a covering for coated objects, such as trim parts of a motor vehicle. Regions in the plastic skin include switching, sensor, or transmission functionality.

Abstract: In a method for producing three-dimensionally structured surfaces of objects as a reproduction of an original surface, the topology of the original surface is determined, and the data are used for controlling a machining tool. The determined topology and a random topology of a reproduction surface are brought closer to one another via a series of proximity comparisons until all items of height information of the reproduction surface are successively replaced by items of height information from the original surface, and that once an established similarity between the topologies of the reproduction surface and the original surface is obtained, the items of height information of the reproduction surface are provided for controlling the machine tool serving to machine the surface of the object.

Abstract: A plastic foam material based on polyolefins containing 50-90 wt. % of polypropylene-based plastic and 10-50 wt. % of polyethylene-based plastic with a melt flow index MFI (190° C./2.16 kg) of less than 50 g/10 min is described, where the plastic foam material has a density of 0.03-0.2 g/cm3. This plastic foam material is characterized in that it contains 20-70 wt. % of crosslinked polyolefin, in that the polyethylene-based plastic has a melt flow index MFI (190° C./2.16 kg) of less than 2 g/10 min and more than 0.05 g/10 min, and in that the polypropylene-based plastic has a molecular weight (weight-average molecular weight) of 150,000-600,000 g/mol. This product can be used to particular advantage for the production of interior linings of motor vehicles and the like. In particular, it has superior elongation values at room temperature.

Abstract: Method for producing an embossing roller from silicone rubber for the continuous embossing of the surface of a thermoplastic film, with the embossing surface having a negative form of a surface structure to be embossed. An auxiliary roller is provided which is plastic, at least in the region of its circumferential surface. A laser beam is directed onto the circumferential surface and controlled for defining a real imaginary pattern in such a way that a surface structure of the pattern is created as a positive form on the surface. A layer of silicone rubber provided on the surface produces an embossing matrix which is pulled off the surface, turned inside out, and adhered to a surface of an embossing roller, with the negatively structured embossing surface facing outward. Thus, multiple embossing matrices can be created after a one-time structuring of the surface of an auxiliary roller, using a casting process.

Abstract: A textured, layered mold-formed body is produced with a foil laminate in which a top foil of at most partially crosslinked polymer materials and a sub-foil containing a polymer foam material with a density between 35 and 120 grams per liter and a gel content of less than 80 percent are laminated together. The foil laminate is embossed with a texture and treated with electron beams to give the texture enough stability for a subsequent deep-drawing step in which the mold-formed body is produced.

Abstract: A method is provided for producing a molded part that is deep drawn from a thermoplastic foil. An outer surface of the thermoplastic foil is provided with a positive depth structure, under the effect of heat and pressure, by means of a stamping or embossing roller that has a negative depth structure. In at least one extent of a surface of the embossing roller, the negative depth structure of the roller is compressed in such surface regions thereof that effect a stretching of the foil during deep drawing. Subsequently, at least a portion of the foil is deep drawn.

Abstract: A method for the preparation of a polyolefin foil by developing a foil from mass having a content of polyolefin and with subsequent treatment of the foil by an electron beams beam. The polyolefin foil prepare according to the invention specific method distinguishes itself vis-à-vis the state of the art by favorable price, concurrent with excellent ability of being laminated and embossed as well as having high grain stability.

Abstract: A method is provided for producing a molded part that is deep drawn from a thermoplastic foil. An outer surface of the thermoplastic foil is provided with a positive depth structure, under the effect of heat and pressure, by means of a stamping or embossing roller that has a negative depth structure. In at least one extent of a surface of the embossing roller, the negative depth structure of the roller is compressed in such surface regions thereof that effect a stretching of the foil during deep drawing. Subsequently, at least a portion of the foil is deep drawn.

Abstract: Method for producing an embossing roller from silicone rubber for the continuous embossing of the surface of a thermoplastic film, with the embossing surface having a negative form of a surface structure to be embossed. An auxiliary roller is provided which is plastic, at least in the region of its circumferential surface. A laser beam is directed onto the circumferential surface and controlled for defining a real imaginary pattern in such a way that a surface structure of the pattern is created as a positive form on the surface. A layer of silicone rubber provided on the surface produces an embossing matrix which is pulled off the surface, turned inside out, and adhered to a surface of an embossing roller, with the negatively structured embossing surface facing outward. Thus, multiple embossing matrices can be created after a one-time structuring of the surface of an auxiliary roller, using a casting process.

Abstract: Description of a method for the preparation of a polyolefin foil by developing a foil from a mass having a content of polyolefin and with subsequent treatment of the foil by means of electron beams. The polyolefin foil prepared according to the invention specific method distinguishes itself vis-a-vis the state of the art by favorable price, concurrent with excellent ability of being laminated and embossed as well as having high grain stability.

Abstract: Polyurethane moulding compositions which can be melt processed in the form of sintering powders suitable for the preparation of grained sintered films and which are prepared exclusively from linear aliphatic components are described. The polyol component is composed of 30 to 80 parts by weight of an aliphatic polycarbonate diol with an average molecular weight {overscore (M)}n of 1000 to 2200 and 70 to 20 parts by weight of a polybutane diol adipate and/or a polycaprolactone diol with an average molecular weight {overscore (M)}n of 1000 to 2400. Moreover, the mixture contains 1,6-hexamethylene diisocyanate in an equivalence ratio of 2.3:1.0 to 6.2:1.0, based on the polyol mixture and butane-1,4-diol as chain extender, the equivalence ratio of the butane-1,4-diol based on the poly mixture being 1.3:1.0 to 5.2:1.0.

Abstract: A light-stable, sinterable particulate thermoplastic molding composition is described. The thermoplastic compositions of the present invention consist essentially of: (i) a resinous blend of, (a) thermoplastic polyurethane, and (b) a member selected from at least one of a number of recited copolymers, e.g., a styrene-acrylonitrile copolymer; (ii) a UV stabilizer; and (iii) an antioxidant. The thermoplastic polyurethane (a) is prepared from an aliphatic or cycloaliphatic diisocyanate. The molding compositions are suitable for the preparation of textured sintered films, e.g., by the powder-slush process, having improved tactile properties that, for example, may be used in the fabrication of vehicle interior trim components and vehicle air bags.

Abstract: The invention relates to light-stable sinterable thermoplastic polyurethane molding compositions of reduced mechanical strength which can be processed by the powder-slush process. The molding compositions according to the invention are particular suitable for the production of grained sintered films for interior lining of means of transport, in particular as a covering for airbags in motor vehicles.

Abstract: In a process for the peroxide-free grafting of ethylenically unsaturated carboxylic acids, carboxylic anhydrides and/or their derivatives to a homopolymer or copolymer of ethylene having a density equal to or greater than 0.930 g/cm.sup.3, the monomers to be grafted are used in a concentration of from 0.01 to 0.5% by weight and the grafting reaction is carried out at from 210.degree. to 300.degree. C. in a conventional extruder or mixer in the absence of a free radical initiator. The graft copolymers are used for the preparation of ionomers and adhesion promoters.

Abstract: In a process for the peroxide-free grafting of ethylenically unsaturated carboxylic acids, carboxylic anhydrides and/or their derivatives to a homopolymer or copolymer of ethylene having a density less than 0.930 g/cm.sup.3, the monomers to be grafted are used in a concentration of from 0.01 to 0.5% by weight and the grafting reaction is carried out at from 210.degree. to 300.degree. C. in a conventional extruder or mixer in the absence of a free radical initiator. The graft copolymers are used for the preparation of ionomers and adhesion promoters.

Abstract: N-(3,5-Dichlorophenyl)-oxazolidine-2,4-diones of the formula ##STR1## where R.sup.1 is haloalkenyl, alkenyl, chloromethyl, CN, CO--O-alkyl, alkoxyalkyl or alkylthioalkyl and R.sup.2 is haloalkenyl, alkenyl, hydrogen or alkyl, are prepared by a process in which 3,5-dichlorophenyl isocyanate is reacted with a glycolate of the formula ##STR2## where R.sup.1 and R.sup.2 have the above meanings and R.sup.3 is alkyl or cyclohexyl, in the presence of a tin(II) salt of the formula ##STR3## where R.sup.4 and R.sup.5 are identical or different and are each hydrogen, alkyl, alkenyl or unsubstituted or alkyl-substituted cycloalkyl, or benzyl or phenyl, or R.sup.4 and R.sup.5 together form --CH.sub.2 --CH.sub.2 --, --CH.dbd.CH-- or o-phenylene, at from 0.degree. to 110.degree. C., the product is heated in the presence of an alcohol of the formulaR.sup.6 --OHwhere R.sup.

Abstract: In order to prepare thermoplastic polyurethane elastomers(a) organic diisocyanate,(b) polyhydroxyl compounds with molecular weights of 500 to 8,000, and(c) chain extenders with molecular weights of 60 to 400 in the presence of(d) catalysts, and optionally(e) auxiliaries, and/or(f) additivesare reacted in two reaction stages at temperatures from 60.degree. C. to 250.degree. C. In the first reaction stage the components are continuously mixed, the reaction mixture is applied to a carrier, preferably a conveyor band of thermoplastic material, and is allowed to react at the reaction temperature until solidified. Subsequently, the solidified reaction mixture is melted in an extruder and the reaction is completed in the second reaction stage.