Polymer melt mixing tower

Abstract

A polymer melt mixing tower, including a mixing tower and a stirring shaft, on the surface of the components in contact with the molten polymer in the mixer are provided with concave-convex anti-adhesion structures, which can realize the polymer melt in the spinning assembly The anti-adhesion effect in the concave-convex anti-adhesion mechanism is as follows: the concave-convex anti-adhesion structure includes a concave part and a convex part, and the convex part is set higher than the surface of the component, and the support between the points is used to reduce the height. The direct contact between the viscous polymer melt and the surface of the part, and the formation of a gas suspension under the action of the high-temperature and high-pressure melt, plays a self-separating anti-adhesion.

Description

technical field [0001] The invention relates to the technical field of textile chemical fiber spinning, in particular to a polymer melt mixing tower. Background technique [0002] The earliest record of the melt spinning process comes from a British patent in 1845. In 1939, melt spinning was industrialized as a production process for the manufacture of nylon 66 fibers. The basic process of melt spinning includes material melting, extrusion from the micropores of the spinneret, and cooling and solidification of the melt stream. The finished filament can be wound into a bobbin or otherwise processed. In the process of melt spinning, the polymer is fed into the extruder, conveyed by the screw, plasticized, melted and then forwarded to the metering accumulator: the metering polymer ensures that the melt of the polymer can flow stably and evenly into the In the spinning assembly of the key component, the melt in the spinning assembly is filtered by the filter medium to remove ...

AI Technical Summary

Problems solved by technology

[0007] Since the molten high-temperature polymer melt needs to transfer and flow in the spinning component, it is inevitable that the high-temperature melt will be in contact with the spinning component quality inspection, and it will inevitably be on the inner wall of the spinning component. There is adhesion. Although the inner wall of the spinning component can be processed smooth enough at present, the polymer adhesion caused by the inner wall surface problem has been greatly reduced. However, due to the processing accuracy and processing technology However, it is difficult to make the inner wall completely smooth, which will still cause polymer adhesion; in the prior art, there is also a solution to add a lubricant between the polymer and the inner wall of the spinning component during spinning, so that It will have a certain anti-adhesion effect, but these added lubricants will inevitably enter the polymer, and then the properties of the polymer and the properties of subsequent spinning will have unpredictable effects, and it is not advisable

Due to the adhesion of the polymer during the spinning process, it is necessary to thoroughly clean the spinning group after the production plan of a batch is not completed. The cleaning of the spinning group will lead to a great consumption of time and cost, and There will still be some dead corners that are difficult to clean, which will adversely affect subsequent production

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