Spinning device for polyester staple fibers for filling

Abstract

The invention provides a spinning device for polyester staple fibers for filling and relates to equipment for producing polyester staple fibers. The spinning device comprises a spinning jet, a plurality of nozzles arranged on the lower part of the spinning jet and a blowing device arranged around the spinning path of the nozzles, wherein a plurality of blowing ports of the blowing device are arranged on a circumference vertical to the spinning path; and the distance between the blowing ports and the nozzles is 15 to 25cm, and the blowing ports are inclined downward. In the spinning device, thefreezing point of the fibers is raised and the fibers can be condensed in a higher temperature area, so that the hole size of the fibers is big, the uniformity is improved, the stretch rate of the fibers is improved, the natural and the maximum drawing ratios of the spun fibers are improved, and the elastic recovery rate of the finished products of fibers is enhanced. In order to avoid the mutualinterference of horizontal radial concentric air and generate air flow facing the nozzles, the blowing ports of the spinning device inclined 5 to 25 degrees downward, so that the cooling air is wholly back-taper-shaped, the air flow which faces upward and can interfere the fiber outlets of the nozzles is not generated, and the regular fiber discharge is ensured.

Description

technical field [0001] The invention relates to a production equipment of polyester staple fiber, in particular to the improvement of the spinning device in the equipment. Background technique [0002] The polyester staple fiber used for filling needs better elasticity and recovery rate, so that the filled object has high elasticity and no deformation during use. Elasticity and recovery rate are indicators that need to be strictly controlled in the production process of polyester staple fiber. Polyester staple fiber has a hollow structure microscopically, and the fiber with a hollow structure makes the fiber elastic; on the one hand, the recovery rate requires the material itself to have a certain elastic deformation capacity. , At the same time, there are also requirements for the friction between the fibers. Excessive surface friction between the fibers will also affect the rebound and recovery indicators. The fiber surface smoothness index can reduce the friction between...

AI Technical Summary

Problems solved by technology

However, in this solution, because the solidification point of the fiber is far away from the silk outlet, the mesopore of the fiber becomes smaller under the action of gravity during coagulation molding, which affects the elasticity of the fiber, and the elastic recovery rate of the finished fiber is poor.

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