problemos priežastis:
① The extrusion temperature of the film blowing machine is low, and the resin plasticization is poor, resulting in poor transparency of the film after blowing;
②The inflation ratio is too small;
③The cooling effect is not good, which affects the transparency of the film;
④ The moisture content in the resin raw material is too large;
⑤ The traction speed is too fast, and the film cooling is insufficient