摘要:
Non-flammable, high-temperature resistant polyimide fibers have irregularly lobed or serrated cross-sections, a wool-like smooth hand and high brightness. They are produced by a dry-spinning process which is carried out in a spinning column, wherein a 20 to 40% solution of the polyimide is spun from spinnerets having circular orifices, the orifice numbers ranging from 20 to 800 and the orifice diameters from 100 to 300 .mu.m. An extrusion speed of between 20 and 100 m/min, a take-up speed of between 100 and 800 m/min, an amount of spin gas between 40 and 100 m.sup.3 /h under standard conditions and a spin gas temperature of between 200.degree. and 350.degree. C. are applied. The tows leaving the spinning column, which contain residual solvent from 5 to 25% by weight--based on dry polymer--and have a single filament titer of between 3.5 and 35 dtex, are washed in hot water, then they are dried to a moisture content of less than 5%, subsequently are drawn at high temperatures and, if desired, are crimpled and cut into staple fibers.
摘要:
The present invention concerns a process for the manufacture of solid regenerated viscose fibres, comprising the steps of: —spinning a viscose spinning dope through a spinneret comprising spinning holes into a regenerating bath thereby forming filaments, —said viscose spinning dope having an alkali ratio immediately before spinning of from 0.7 to 1.0, preferably from 0.8 to 0.9, —at least part of said spinning holes having a circular orifice, —said regenerating bath containing—from 70 to 120 g/l, preferably 90 to 110 g/l sulfuric acid, —from 240 to 380 g/l, preferably 330 to 370 g/l sodium sulphate, —form 20 to 50 g/l, preferably 25 to 35 g/l zinc sulphate and said regenerating bath having a temperature of from 45 to 55° C., preferably 48 to 50° C., —stretching said filaments after leaving said regenerating bath in a secondary bath and/or in air at a stretching ratio of from 70% to 90%, preferably 80% to 90% of the maximum stretching ratio as hereinbefore defined and—treating said filaments with a fatty acid ester.
摘要:
A method of route calculation in an vehicle navigation device is described, whereby a route from a starting location or a current location to a destination location is calculated, so that in the case of a deficiency in the vehicle or a deficiency impairing the driver of the vehicle, the route to an alternate destination location which has facilities for eliminating the deficiency is calculated instead of the original destination location. In addition, a method of navigation of a driver of a vehicle from a starting location to at least one destination location is also described, a trip route from the starting location or a current location to the at least one destination location being determined, and driving instructions being generated as a function of a current location so that in the case of a deficiency in the vehicle or a deficiency impairing the driver of the vehicle, the trip route to an alternate destination location which has the facilities for eliminating the deficiency is calculated.
摘要:
The invention relates to a sealing device 1 for an electrical terminal 24 of a conductor carried in a carrier 21 which is electrically connected to a contact element 22 via the terminal 24. The sealing device comprises a housing having two housing parts 2, the two housing parts 2 being foldable at one end via a pivoting connection 4 to seal the terminal 24. The two housing parts 2 are respectively constructed as plate-shaped covers with large-area seals 3 on the inner faces of the covers.
摘要:
A ventilation system for a cabinet, such as a cabinet containing heat-producing components of a data processing system, those components being arranged stacked in the cabinet in tower fashion, has four identical fan units for drawing air over the components and discharging the air from the cabinet. The fan units are disposed at mid-height in the cabinet, and are divided into two pairs. The fan units in each pair have their respective air intake directions facing toward each other. The fan units of one pair are disposed directly one above the other, and the fan units of the other pair are disposed a distance apart, forming a horizontal air duct therebetween. Partitions are disposed in the cabinet for causing the fan units in the first pair to discharge air into the duct formed between the fan units of the other pair, the duct conducting the air to an exterior of the cabinet. The partitions cause the fan units of the other pair to discharge air in a direction out of the cabinet.
摘要:
In a method of transmitting digitally encoded traffic messages, the traffic messages being transmitted according to a standardized structure, in particular according to the TMC method, where a header precedes the digitally encoded traffic messages, and the digitally encoded traffic message is followed by at least one additional item of information, and one of these items of information contains a place description, the additional information is divided into classes, each class having a class identifier and at least one packet. One class contains presentation data.
摘要:
In a method for coding traffic hindrances encroaching on the street, in digitally coded traffic messages which contain, as elements, a location on a street and the extent and the direction of the traffic hindrance and which are decoded on the basis of a location table, in reported traffic hindrances that extend, based on their size, beyond a junction onto a different street, a further element codes the information, on which of the bifurcating streets, in which direction, and how far, the reported traffic hindrance extends.
摘要:
A process for manufacturing articles of filter paper in which the wet strength of the regions of weak points resulting from mechanical working is increased by the application of a wet strengthener of cross-linked cationic polyalkylenimines. For this purpose, the wet strengthener is applied only to the regions of the weak points after the filter paper has been manufactured. Seams or edge reinforcements are formed by relief printing before the application of the wet strengthener and a heat treatment takes place after application of the thermoplastic wet strengthener to cause the wet strengthener to harden. The application of the wet strengthener is effected in measured doses so that the legally prescribed maximum amounts to be added are not exceeded.
摘要:
The present invention concerns a process for the manufacture of solid regenerated viscose fibres, comprising the steps of:—spinning a viscose spinning dope through a spinneret comprising spinning holes into a regenerating bath thereby forming filaments,—said viscose spinning dope having an alkali ratio immediately before spinning of from 0.7 to 1.0, preferably from 0.8 to 0.9,—at least part of said spinning holes having a circular orifice,—said regenerating bath containing—from 70 to 120 g/l, preferably 90 to 110 g/l sulfuric acid,—from 240 to 380 g/l, preferably 330 to 370 g/l sodium sulphate,—form 20 to 50 g/l, preferably 25 to 35 g/l zinc sulphate and said regenerating bath having a temperature of from 45 to 55° C., preferably 48 to 50° C.,—stretching said filaments after leaving said regenerating bath in a secondary bath and/or in air at a stretching ratio of from 70% to 90%, preferably 80% to 90% of the maximum stretching ratio as hereinbefore defined and—treating said filaments with a fatty acid ester.
摘要:
A navigation method is set forth for calculating a travel route of a vehicle from a starting or an actual vehicle location to an operator-defined destination and for guiding a vehicle operator during operation of the vehicle over and along the calculated travel route, in which at least one possible parking location at the operator-defined destination is designated and the at least one possible parking location is included in the calculating of the travel route as a location to which the vehicle is guided when the operator conducts the vehicle over the travel route. After input of the operator-defined destination into a navigation unit of the vehicle by the operator, the location to which the vehicle is guided over the travel route is determined by the navigation system advantageously automatically taking account of the available parking locations at the input destination. Either the vehicle operator can select between a number of possible parking locations proposed by the navigation system or the navigation system can automatically select the best parking location using a predetermined selection criterion. Thus the operator does not need to know the exact address of the parking locations near the destination, so that the operator is relieved of input of the address of the parking location to which the vehicle is to be guided by street name or other information in order to determine the calculated travel route.