With our continuous pre-expansion, polystyrene is performed with a continuous cycle in the first expansion. This is of great importance as the starting point for optimal manufacturing of foamed products. In the end the density of the raw material is decisive for the weight of any product you produce. For example: it is possible to produce a 200 ml drinking cup with a weight of 2 grams, while a weight of 1,5 grams is an option as well, using the same machine and moulds. We offer a wide range of pre-expanders with varying capacities.
The automatic processing cycle begins with the inlet of raw material into the expansion chamber through the dosing hopper.