Preparation method and device of composite polyester fiber

Abstract

The invention discloses a preparation method and device of a composite polyester fiber. The preparation method comprises the following steps of: drying a polyester chip; adding the dried polyester chip in a melt extrusion device to obtain a polyester chip melt; putting the polyester chip melt in a spinning manifold, extruding from a spinneret plate spinning micropore of a spinneret plate spinning device, cooling and solidifying to obtain strand; winding the strand to obtain protofilament; adjusting the pressures, stretching times and winding speeds of the pre-network and main network of the protofilament to prepare a first protofilament and a second protofilament; and carrying out crosslinking composition, heat setting, oiling and winding formation on the first protofilament and the second protofilament. The device comprises a drying device, the melt extrusion device, the spinning manifold, a cooling and solidification device and a winding formation device which are connected in sequence. Through the preparation method and device, the comprehensive properties of the fiber, such as spinnability, dyeability and comfortability, can be improved, certain properties of the fiber can surpass those of natural fiber, production cost is low and efficiency is high.

Description

technical field [0001] The invention relates to the field of composite fibers, in particular to a preparation method and equipment for polyester composite fibers. Background technique [0002] With the progress and development of world science and technology and consumers' increasing requirements for diversification, high-grade and comfort of new chemical fiber materials, in recent years, my country has successively put into operation a number of 10,000-ton polyester melt direct spinning production lines, but the production Most of them are conventional varieties of polyester, so that the development of conventional products is excessive, and most chemical fiber enterprises have serious shortages in product development and technological innovation, irrational product structure, lack of international operation capabilities and international competitiveness. [0003] The polyester fiber produced by the prior art has poor spinnability, poor dyeability, poor bulkiness and resilie...

AI Technical Summary

Problems solved by technology

[0002] With the progress and development of world science and technology and consumers' increasing requirements for diversification, high-grade and comfort of new chemical fiber materials, in recent years, my country has successively put into operation a number of 10,000-ton polyester melt direct spinning production lines, but the production Most of them are conventional varieties of polyester, so that the development of conventional products is excessive, and most chemical fiber enterprises have serious shortages in product development and technological innovation, irrational product structure, lack of international operation capabilities and international competitiveness

[0003] The polyester fiber produced by the prior art has poor spinnability, poor dyeability, poor bulkiness and resilience, and its fabric cannot fully have the feel of cotton, and its comfort is not good enough, and it also has high production costs. and low efficiency