Production process of a new type of nylon 6 with fdy flat cross-section

Abstract

The present invention provides a kind of production technology of the polyamide fiber 6 of a kind of novel FDY matting flat section, step S1, add full matting slice in the silo; Step S2, slice enter screw extruder, extrude from the top of screw extruder; Step S3. After the melt is metered by the spinning metering pump, filtered, mixed and pressurized by the spinning assembly, a thin stream of the melt is sprayed from the spinneret hole, and then cooled and solidified to form; step S4, the formed primary fiber is processed Oiling operation; step S5, the primary fiber after oiling enters the pre-netting device, and under the action of a certain low air pressure, the tows are intertwined with each other; step S6, the primary fiber is first wound on the cold roll and then pulled in an orderly manner Winding and shaping on the hot roller; step S7, the fiber filaments are sent into the main network device, and the network is carried out; step S8, then winder is wound into a silk cake; the production process of the present invention is simple and efficient. High, high and stable product quality, can effectively meet the needs of the market, and has broad application prospects.

Description

【Technical field】 [0001] The invention relates to the manufacturing technology of spinning, in particular to the production technology of a novel FDY nylon 6 with dull flat section. 【Background technique】 [0002] For nylon fiber, its performance is affected by cross-sectional shape, production process steps and various process parameters in the production process. These conditions are different, and the performance obtained is also different. For example, with the same production process steps, if the process parameters are different, although nylon fibers can also be produced, their properties are different. However, not all of these nylon fibers with different properties meet market demand, and most of them have no market. Competitiveness, or performance indicators do not meet the requirements; another example, the production process steps are different, although the cross-sectional shape of the produced nylon fiber is different, but its performance is also very different...

AI Technical Summary

Problems solved by technology

For example, in the same production process steps, if the process parameters are different, although nylon fibers can also be produced, their properties are different. However, not all of these nylon fibers with different properties meet the market demand, and most of them have no market. Competitiveness, or the performance index does not meet the requirements; another example, the production process steps are different, although the cross-sectional shape of the produced nylon fiber is different, but its performance is also very different, and for example, the different cross-section of nylon fiber means that the structure are all different, which means that the production process steps and various process parameters also need to be redesigned

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