Ptfe film owns vast and varied service program ranging from outer pipeline shielde, insulator wrap up of integer gadgets and the anti-sticking pan layer for cookery. Different from our imagination, Ptfe film is not produced by plastic blowing or casting work. The thin PVDF film extrusion line is cut from the rough in .
PTFF belongs to the mob of fluorinated materials. Such stuff is with the high-level temperature sustentation. This kind of stuff is non-combustible, so it can be used as nonconductor material. Among all types of solid state plastics, PTFE owns the last friction coefficient. Its sustainable anti-bending tense would obviously pass other two types of fluorinated plastics: FEP and PFA. However, PTFE also owns impuissance: it may still own high-level melt viscosity under the temperature above 327 degrees Celsius. It is also with high-level gap sensitiveness. Therefore, park shape-forming methods like expulsion, shot border and blow moulding method would be hard to utilize on PTFE manufacturing.
Different from polyethylene film, a type of manufacturing routine should be applied before the whiten pulverise turns to thin and transparent Teflon film. That is to say, PTFE raw material would be pressed into designed patch under the family temperature. And then, the pre-forming pieces would be hot to the temperature above crystallization target. That is to say, burn the raw stuff above the thaw temperature to get unsoluble sintered lug(or rough blank).
Commonly, the warming temperature should be around 380 degrees Celsius. Through the sintering work, the rough in denseness of PTFE should be between 2.1 and 2.3g ml as per the manufacturing and the forming watch crystal. If the cooling system process is slow, the denseness would be high. At that time, the material can be with high crystallization condition, insensibility and high-type stability. The sintering under such pressure can gain high density and callosity of PTFE rod without the existence of pores. It is the presumption to gain super-thin PTFE film.
When finishing the above pre-forming sintering, the film thinning can be dead. The film thinning device would use all operating gadgets on the signalise device. The signalize is installed on the right base and turn to every way. The simple machine operator can run the simple machine via presses on the sign device 39;s dominant pad to do space load and blank feeding. The heaviness and speed up of film thinning would be also chosen on the dominant pad in advance. When the film thickness and space wheeling are confirmed, the whole number controller would mechanically determine the feeding speed up.