PTFE rods are classified into two types: suspension PTFE and dispersed PTFE according to different polymerization methods.

    The suspended PTFE rod resin is a white powder with large particles, and after appropriate post-treatment, powders with different particle sizes can be obtained. This powdered resin is used for molding and calendering, and is not directly used for the production of wire and cable. When used for wire and cable insulation, the suspended PTFE should be molded, sintered into a cylindrical billet, and then turned into a PTFE film on a lathe. This kind of film is also called cooked strip, and the common wire and cable is wrapped for insulation.

    The dispersed PTFE rods are divided into powder and concentrated dispersion. Among them: the powdery dispersion resin is added to a certain amount of additives (such as petroleum ether) and fillers (such as quartz powder) after mixing, for push molding, suitable for pushing and processing of thin-walled products such as wire and cable, in the current wire There are many applications in production: the powdery dispersion resin can also be pressed and formed, and then rolled into a PTFE film (also formed into a raw material tape) for thin wire diameter wire insulation or wire sheath wrapping. The PTFE concentrated dispersion is mainly used for impregnating porous materials (such as asbestos, glass, fiber) and surface coating of metal bearings made by powder metallurgy. The PTFE insulated electromagnetic wire and the glass fiber woven layer of the high temperature resistant wire are used for the coating of the PTFE concentrate.