too high, resin is easy to decompose, and the thin film brittle, in particular, the longitudinal tensile strength decreased significantly; temperature is too low, then the resin plasticizing poor, can not carry out smooth expansion of the tensile, tensile strength is low, and surface gloss and transparency, poor, even as the timber ring-like pattern and did not melt the nucleus (fish eyes).
2. Inflation ratio
Inflation blown film production process than is the control of one of the points, after Inflation is the diameter of vesicles with and without Inflation tube diameter of the ratio between. Inflation higher than the horizontal expansion of multiples for the film, the film is actually a horizontal stretch, stretch plastic molecules would have a certain degree of orientation of the role of Inflation ratio increases, so that the transverse strength