Production process of polyester FDY multi-roll oil-free full-draft fibers

Abstract

The invention discloses a production process of polyester FDY multi-roll oil-free full-draft fibers. The production process includes the following steps that polymerization is conducted in a final polymerization autoclave, raw materials are then processed by means of a melt conveying pump, a melt distributor and a melt booster pump in sequence, the obtained melt is conveyed and then processed by means of a melt cooler, a static mixer, a melt distribution valve and a spinning box in sequence, then the melt is extruded in a metering pump and processed by means of a spinning assembly, fiber cooling and molding is conducted, then semi-finished fibers are processed by means of a U-shaped ceramic piece, a secondary network, a spinning channel, a first additional U-shaped ceramic piece1, a second U-shaped ceramic piece 2, a first silk guide roller, a first-level hot pulling roller, a second-level hot pulling roller, a third-level hot pulling roller and a heat-setting hot roller in sequence, a lubricating nipple is used for oiling, and the obtained fibers are processed by means of a second silk guide roller, a primary network, a third silk guide roller and a guide wheel and subjected to coiling, doffing, quality testing and packaging. According to the production process of the polyester FDY multi-roll oil-free full-draft fibers, the product quality is improved, the running environment of equipment and the working environment of workers in a FDY production place are optimized, yarn path operation is simplified, and energy conservation and high efficiency are achieved.

Description

[0001] Technical field: [0002] The invention relates to the technical field of polyester filament production, and relates to a production process for polyester FDY multi-roller oil-free fully drawn fibers. [0003] Background technique: [0004] Polyester FDY is a kind of polyester full-drawn fiber, which can be directly used in circular knitting, machine weaving, and warp knitting. It is an indispensable raw material for chemical fiber clothing, decorative fabrics and other fabrics in people's daily life. However, the FDY process production route in the industry at this stage all adopts hot roller first-level drafting. This production process technology is relatively mature and widely used; but there are also large technical bottlenecks in the process: the heating energy consumption of the hot roller is high, and the production consumption is large. , The production environment conditions are relatively poor. The basic process route is: polymerization finalization kettle→me...

AI Technical Summary

Problems solved by technology

However, the FDY process production route in the industry at this stage all adopts hot roller first-level drafting. This production process technology is relatively mature and widely used; but there are also large technical bottlenecks in the process: the heating energy consumption of the hot roller is high, and the production consumption is large. , The production environment conditions are relatively poor

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