The EPS (Expanded Polystyrene) pre-expander machine is a device used in the manufacturing process of expanded polystyrene foam products.
Hopper: The machine has a hopper where the raw polystyrene beads are loaded.
Pre-expanding chamber: The pre-expanding chamber is the main part of the machine where the actual expansion process takes place. The chamber is typically cylindrical and equipped with steam injection outlets. The polystyrene beads are introduced into the chamber, and steam is injected to heat and expand the beads.
Steam injection system: The pre-expander machine is equipped with a steam injection system that supplies steam into the pre-expanding chamber. The steam softens the polystyrene beads, causing them to expand.
Agitation system: Inside the pre-expanding chamber, there is an agitation system that ensures uniform heating and expansion of the beads. It usually consists of rotating arms or paddles that stir the beads while they are being exposed to steam.
Main features:
1.The chamber surface is made by stainless steel with good shape and long life
2.The fluidized Bed Drier can be bought by customer solely.
3.The twice pre-explander can pre-expand once or twice to enable the EPS density to be ideal state.
