Production method of melt direct spinning high-modulus low-shrinkage polyester industrial filament

Abstract

The invention discloses a production method of a melt direct spinning high-modulus low-shrinkage polyester industrial filament, and belongs to the technical field of polyester industrial yarns. The production method is used for a tyre cord. The method comprises melt liquid tackifying, melt direct spinning, draft heat shaping and winding molding. A spinning machine is four heads / position and six heads / position, due to the fact that melt direct spinning is achieved, and limit of the flow of spinning by a spinning screw does not exist. High-modulus low-shrinkage polyester industrial filaments produced according to the technical scheme of the production method are stable in product quality and high in production efficiency, improve the yield of unit time, and lower production energy consumption and production cost. Products can be used as good materials such as tyre cords, geogrids and polyester cords.

Description

technical field [0001] The invention relates to the technical field of chemical fiber product manufacturing, in particular to a production method of melt direct spinning high-modulus low-shrinkage polyester industrial filaments. Background technique [0002] High-modulus low-shrinkage polyester industrial filament, referred to as high-modulus low-shrinkage polyester industrial filament, is an industrial filament with high initial modulus and low thermal shrinkage rate. It has better mechanical properties and high crystallinity. The structure with high degree of orientation, high degree of orientation and high regularity and low internal residual stress are mainly used in rubber skeleton materials, such as automobile cord fabrics and wire ropes. At present, the production of high-modulus low-shrinkage polyester industrial yarn is mostly slicing method with 3 heads / position and 4 heads / position. The spinning speed is about 5000 m / min, and the energy consumption and waste yarn ...

AI Technical Summary

Problems solved by technology

At present, the production of high-modulus low-shrinkage polyester industrial yarn is mostly slicing method with 3 heads / position and 4 heads / position. The spinning speed is about 5000 m / min, and the energy consumption and waste yarn rate are relatively high.

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