Nozzle wire components with high properties of polytetrafluoroethylene (PTFE) fiber materials by virtue of its excellent high and low temperature stability, chemical stability, electrical insulation, non adhesion, weather resistant, flame retardant, self lubrication performance has in a number of areas of the national economy won the widely used, become the preferred material environmental protection, filtration, construction, aerospace and other fields.

Due to the nature of PTFE itself, resulting in PTFE fiber manufacturing cannot be simply by heat molding method of plastic polymer materials (such as extrusion molding process, and an important reason for the bottleneck of this technology is also China's long-term production of PTFE fiber, the project R & D staff independent research and development of membrane cracking process of polytetrafluoroethylene fiber, namely, the first through the three-dimensional stretching method prepared to meet certain conditions of expanded PTFE membrane, PTFE film slitting, through some stretching and heat treatment process, will produce the desired PTFE fiber.

To break the technical blockade of developed countries

According to in R & D of the Quartermaster Equipment Research Institute, senior engineer et al, introduced, due to the PTFE insoluble in any solvent, and high molecular chain is arranged in a straight line, rigid, above the melting point of the high viscosity, not the traditional solution method and melting method spinning, which became a major technical problem in the PTFE material deep processing field, has become the technical bottleneck of application of PTFE material in our country.

Currently in the world only a few companies have mastered the production technology of PTFE fiber and one of the main production process with carrier spinning and paste extrusion method, but the company long-term on China's implement technology blockade, and product price expensive, greatly increasing the application of PTFE fiber into the, which seriously restricts the development of PTFE fiber and application development.

Starting from the analysis of only a little foreign production samples, a long years of difficult exploration and pioneering process kicked off this. It is reported that the research group composed of enterprises, scientific research units and users to design PTFE split production process method length fiber, developed the production process control of temperature gradient of non constant speed, variable width, multiple stretch of PTFE fiber, developed high temperature PTFE long fiber and short fiber, short fiber and PTFE solution wire "problem; developed multi edge type split long fiber cutter, wear of diamond cutting short fiber needle roller, dental floss and other key sections split forming device, design and processing of spiral extrusion machine, two roller calender, non-uniform tensile machine, temperature gradient amplitude width tensile machine, split long fiber short fiber cutting machine, cutting machine, extrusion fiber drafting machine, crimping machine series of complete sets of production equipment, and the establishment of a large-scale production line; R & D and production of" better "PTFE high strength dental floss, pure PTFE gradient coatings Membrane filtration materials, all of these process technology, series of products and production equipment, at home and abroad have not seen similar or the same reports, with novelty and innovation. Product search further proved that the production of PTFE fiber filled the domestic blank, PTFE fiber performance in the international advanced level, PTFE fiber products are in the international advanced, domestic leading level.