What does the casting machine do? It is the process of making cast film and the production of cast film. My friends must ask again, what is cast film? Cast film is a non-stretched, non-oriented flat extrusion film produced by melt casting and quenching. There are two ways of co-extrusion and casting of single layer and multi-layer. It has excellent heat sealing performance and excellent transparency, and is one of the composite substrates for packaging.
Casting machines were introduced to China from abroad in the 1980s, and most of them are single-layer structures. Used to produce high-temperature cooking film, vacuum aluminized film, etc.
There are two types of casting: solution casting and melt casting. The main components of the casting machine are: a casting nozzle for the smooth flow of liquid, a steel belt for film formation, and a drying system. The thickness of the film is determined by the viscosity of the liquid, the amount of feed, and the speed of the vehicle. The accuracy of the film mainly depends on the accuracy of the casting nozzle and the steel strip. Of course, the smoothness of the equipment operation is also an important factor affecting product quality.
