Technique for preparing returnable bottle piece spinning hollow fiber

Abstract

The invention relates to a manufacture technique for spinning hollow fiber by recycling bottle chips. The method is characterized in that the manufacture steps includes filtering bottle chip, drying bottom chip, melting with high temperature, screw rod extrusion, spraying silk spray plate, cooling and oiling, shaping and winding, balancing, stretching, deforming, network and finished product. The silk spraying holes of the adopted silk spray plate are combined by ''C''-shaped holes arranged in a concentric circle, and the numbers of the ''C''-shaped holes are the same as that of special-shaped fiber singles to lead the section shape of the special-shaped fiber sprayed by the silk spray plate and formed by a subsequence working procedure to be ''C''-shaped; a bottle chip drying tower the upper part of which adopts a variable diameter form and the inside is added three rectangle cones; a melt filter device is a three grade vertical filter. The invention is used very broadly.

Description

technical field [0001] The invention relates to a production method of special-shaped fibers, in particular to a production method of recycled bottle flake hollow special-shaped fibers. Background technique [0002] The use of recycled bottle flake spinning can not only solve the environmental pollution problem of polyester, realize the recycling of resources, and protect the environment; it can also reduce energy consumption and reduce my country's dependence on international crude oil. The most fundamental advantage is that the cost of recycled materials is relatively low, and the products The price advantage is obvious and the market space is huge. However, the synthetic fibers produced by melt spinning of recycled bottle flakes generally have a relatively simple organizational structure and form. Compared with natural fibers, there is a considerable gap in terms of structure and performance, and the surface gloss of the fibers is poor. There are shortcomings such as easy...

AI Technical Summary

Problems solved by technology

However, the synthetic fibers produced by melt spinning of recycled bottle flakes generally have a relatively simple organizational structure and form. Compared with natural fibers, there is a considerable gap in terms of structure and performance, and the surface gloss of the fibers is poor. There are shortcomings such as easy to get dirty, easy to pilling, poor water absorption, poor bulkiness, poor hand feeling, and low elasticity.

At the same time, due to the high impurity content of recycled bottle flakes, the melting point and viscosity are very different, which brings many unstable factors to the melting production, and the fiber uniformity is poor.

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