Production method of elastic fiber

Abstract

The invention discloses a production method of elastic fibers, including the following process steps: 1) mixing 4 parts of polypropylene, 6 parts of polyethylene, 6 parts of polyolefin, and 85 parts of an allyl elastomer, feeding into a storage bin of a twin screw reactive extrusion machine; 2) passing through ten heating temperature zones in turn for melt mixing extrusion; 3) solidifying into strips through a cooling waterway, dragging and chopping into particles by a pelletizer; 4) drying; 5) screening; 6) feeding into a bin of a screw extruder, extruding the melt material by four different heating temperature zones of the screw extruder; 7) ejecting out the elastic fibers through ejection mouths; 8) side blowing cooling the ejected elastic fibers and passing the ejected elastic fibers through a curing tunnel, lubricating and applying oil through an oil tanker, feeding into a first godet roller, then through a second godet roller; and 9) winding the fibers through a winding machine. The production method enables the fibers to possess the performances of chlorine resistance, ultraviolet radiation resistance, acid and alkali resistance, high temperature resistance, wear resistance, and air permeability, at the same time helps to reduce energy consumption, and has no emission of waste water, waste gas, and waste residue.

Description

technical field [0001] The invention relates to a method for producing elastic fibers. Background technique [0002] At present, the elastomeric fibers produced in our country are in the middle and lower grades in the world, and the medium and high-grade elastomeric fibers need to be imported. At present, there are two methods and processes for the production of elastomeric fibers in my country: 1. Dry spinning method: its advantages are: The strips are more uniform, the strength is better, and the temperature resistance is higher; the disadvantage is: its raw materials PTMG, MDT polytetramethylene glycol, and diphenylmethane are mainly imported, and the method of producing the elastomer fiber is complicated, the process is long, and it occupies an area. The area is large and the energy consumption is high (10,000 yuan of output value consumes 1-1.2 tons of standard coal). During the production process, the use of harmful solvents (dimethylformamide and dimethylethylamine DMF,...

AI Technical Summary

Problems solved by technology

[0002] At present, the elastomeric fibers produced in our country are in the middle and lower grades in the world, and the medium and high-grade elastomeric fibers need to be imported. At present, there are two methods and processes for the production of elastomeric fibers in my country: 1. Dry spinning method: its advantages are: The strips are more uniform, the strength is better, and the temperature resistance is higher; the disadvantage is: its raw materials PTMG, MDT polytetramethylene glycol, and diphenylmethane are mainly imported, and the method of producing the elastomer fiber is complicated, the process is long, and it occupies an area. The area