摘要:
A solution of resinous organosilicon polymer dissolved in an inert solvent is moved downstream as a film through a heated, film-forming zone having an inert atmosphere and a temperature above the polymer's melting point. The solvent is vaporized from the film and withdrawn from the film-forming zone. Molten resinous organosilicon polymer in the solvent-depleted film is withdrawn from the zone. The molten polymer is then directly melt spun into filaments which are gathered into a fiber. Various processing parameters are controlled.
摘要:
A solution of resinous organosilicon polymer dissolved in an inert solvent is moved downstream as a film through a heated, film-forming zone having an inert atmosphere and a temperature above the polymer's melting point. The solvent is vaporized from the film and withdrawn from the film-forming zone. Molten resinous organosilicon polymer in the solvent-depleted film is withdrawn from the zone. The molten polymer is then directly melt spun into filaments which are gathered into a fiber. Various processing parameters are controlled.
摘要:
In the manufacture of a fiber tow, particularly cellulose acetate tow, the tow is plasticized prior to entry into the crimper. The preferred plasticizer is water.
摘要:
The invention relates to a method and a device for producing substantially endless fine threads from polymer solutions, especially spinning material for lyocell, wherein the spinning material is spun from at least one spinning hole or a spinning slot. The spun thread or film is drawn by high-speed accelerated gas flows using a Laval nozzle whose narrowest cross-section is located beneath the point where the spinning material exits. The threads are arranged on a strip in the form of a non-woven or are taken up in the form of a yarn and are subsequently separated in spinning baths by means of solvents
摘要:
Abfälle schmelzgesponnener Fasern werden verwertet durch Verdichten, Einbringen ohne vorherige Trocknung in eine Rostspinnmaschine oder einen Entgasungsextruder, Wiederaufschmelzen, Filtration der Schmelze, Zudosierung dieser Schmelze zu einer frischen Polymerisatschmelze, insbesondere im Verhältnis 1 : 20 bis 1 : 2, bevorzugt 1 : 10 bis 1 : 4, intensive Vermischung beider Schmelzen und Verspinnen des Gemisches zu Fasern.