Abstract: The invention relates to an apparatus for passing at least one fiber tow multiple times through an oxidation furnace by means of godets, the at least one fiber tow being diverted via at least one godet that is arranged offset. According to the invention, the godet comprises a shaft on which at least two single rollers are arranged to be mounted, each single roller being arranged so as to be rotatable on the shaft.

Abstract: The invention relates to a bath and to a method of treating endless fibers, filaments or fabric webs, especially for electrolysis or for cleaning, comprising a bath container (4), which is at least partly filled with a processing fluid, and means for introducing the endless fibers, filaments or fabric webs, characterized in that the means are arranged in such a way that the endless fibers, filaments or fabric web are conducted in a V-shape through the bath.

Abstract: The invention relates to a spinneret for extruding self-crimping hollow fibers including at least one capillary. The at least one capillary has at least one segmented opening, which has at least two opening segments spaced apart from each other in the cross-section. A first opening segment of the at least two opening segments has a first opening-segment width and a second opening segment of the at least two opening segments has a second opening-segment width. The second opening-segment width is wider than the first opening-segment width.

Abstract: The invention relates to a spinning bath vat, including a vat for taking up spinning bath liquid, at least one roller arranged within the vat for guiding the spun filaments, and an infeed and discharge system for spinning bath liquid. According to the invention, it is provided that the spinning bath vat (SBW) has a design which is useful both for wet spinning by means of a spinning nozzle (SD) arranged within the spinning bath liquid (SBF) and for dry/wet spinning by means of a spinning nozzle (SD) arranged above the spinning bath liquid (SBF).

Abstract: The invention relates to a dryer having an upper row and a lower row of rolls, the rolls being replaceably arranged in modular manner in the dryer. The invention is characterised in that each roll module comprises a roll having two bearings and having a front and a rear support.

Abstract: The invention relates to an apparatus for passing at least one fibre tow multiple times through an oxidation furnace by means of godets, the at least one fibre tow being diverted via at least one godet that is arranged offset. According to the invention, the godet comprises a shaft on which at least two single rollers are arranged to be mounted, each single roller being arranged so as to be rotatable on the shaft.

Abstract: The invention relates to a bath and to a method of treating endless fibres, filaments or fabric webs, especially for electrolysis or for cleaning, comprising a bath container (4), which is at least partly filled with a processing fluid, and means for introducing the endless fibres, filaments or fabric webs, characterised in that the means are arranged in such a way that the endless fibres, filaments or fabric web are conducted in a V-shape through the bath.

Abstract: In a wet spinning spinneret comprising a housing which, together with a spinneret plate mounted to the underside thereof, forms a chamber adapted to be supplied with a spinning solution, the spinneret plate having nozzle openings in at least an annular region, and a displacing member arranged inside the chamber above the spinneret plate, which member directs the spinning solution towards the annular zone, it is provided that the displacing member (VK) is attached at a support (TP) arranged upstream of the spinneret plate (SP), seen in the flow direction of the spinning liquid.

Abstract: The invention relates to a spinning bath vat, including a vat for taking up spinning bath liquid, at least one roller arranged within the vat for guiding the spun filaments, and an infeed and discharge system for spinning bath liquid. According to the invention, it is provided that the spinning bath vat (SBW) has a design which is useful both for wet spinning by means of a spinning nozzle (SD) arranged within the spinning bath liquid (SBF) and for dry/wet spinning by means of a spinning nozzle (SD) arranged above the spinning bath liquid (SBF).

Abstract: In a wet spinning spinneret comprising a housing which, together with a spinneret plate mounted to the underside thereof, forms a chamber adapted to be supplied with a spinning solution, the spinneret plate having nozzle openings in at least an annular region, and a displacing member arranged inside the chamber above the spinneret plate, which member directs the spinning solution towards the annular zone, it is provided that the displacing member (VK) is attached at a support (TP) arranged upstream of the spinneret plate (SP), seen in the flow direction of the spinning liquid.

Abstract: Melt-blow head with a rectilinear row of nozzle bores arranged in a nozzle bar of a nozzle assembly, the nozzle bores serving to produce endless filaments formed from a melt, the nozzle bores being associated with blowing slots, in the form of longitudinal slots, to which nozzle bores the melt is fed, via melt feed pipes from one or more distribution bars and via melt pipes in a distribution block of the nozzle assembly. The blowing slots are supplied with the blow air through blow-air feed pipes in a blow-air feed element via blow-air distribution bores. A spinning width of the melt-blow head is variable, wherein only those blow-air distribution bores associated with the nozzle bores to be fed are connected to the blowing slots via blow-air pipes in the distribution block and, where appropriate, the other blow-air distribution bores are closed.

Abstract: Melt-blow head with a rectilinear row of nozzle bores arranged in a nozzle bar of a nozzle assembly, said nozzle bores serving to produce endless filaments formed from a melt, said nozzle bores being associated with blowing slots, in the form of longitudinal slots, of two slot-plates for feeding blowing air at an angle to the nozzle bores and to which nozzle bores the melt is fed, via melt feed pipes from one or more distribution bars and via melt pipes in a distribution block of the nozzle assembly, to those nozzle bores in the nozzle bar which are to be fed with the melt, wherein the blowing slots are supplied with the blow air through blow-air feed pipes in a blow-air feed element via blow-air distribution bores.

Abstract: In a melt spinning apparatus, cooling system with a blower nozzle with slit-shaped outlet openings is used which is directed upon the yarns emerging from the spinning nozzle. The blower nozzle is provided with a bend immediately before its outlet opening through which the air stream is directed to the output of the yarns from the spinning nozzles. The bend is designed so that a rapid and effective cooling of all the extruded filaments takes place, even with a nozzle package with a large number of perforations, without having to provide several blower nozzles. A narrowing at a given distance before the outlet opening ensures even distribution of the flow profile produced over the entire outlet cross-section of the blower nozzle. Furthermore, the spinning nozzles are assigned an induction heating system in which induction coils are placed above the area over which the spinning nozzles extend.

Abstract: In a melt spinning apparatus, cooling system with a blower nozzle with slit-shaped outlet openings is used which is directed upon the yarns emerging from the spinning nozzle. The blower nozzle is provided with a bend immediately before its outlet opening through which the air stream is directed to the output of the yarns from the spinning nozzles. The bend is designed so that a rapid and effective cooling of all the extruded filaments takes place, even with a nozzle package with a large number of perforations, without having to provide several blower nozzles. A narrowing at a given distance before the outlet opening ensures even distribution of the flow profile produced over the entire outlet cross-section of the blower nozzle. Furthermore, the spinning nozzles are assigned an induction heating system in which induction coils are placed above the area over which the spinning nozzles extend.

Abstract: A process for purifying exhaust gases, especially from vacuum pyrolysis installations by means of the extraction of the exhaust gases and their combustion with a supply of air. Immediately after their formation, the exhaust gases are subjected to complete combustion with a controlled air supply and an under pressure of 0.5 to 0.95 bar (500 to 50 mbar absolute) generated by a vacuum pump, whereupon the gaseous reaction products are cooled to 10.degree. to 25.degree. C. to prevent damage to the vacuum pump and then the cooled gaseous reaction products are extracted by the vacuum pump.