Professional EPS Batch Pre-Expander Machine For Turnkey EPS Production Line

The Dongshan High Precision EPS Batch Pre-Expander is engineered to deliver accurate, stable, and energy-efficient pre-expansion of EPS beads for modern foam manufacturing. Designed for manufacturers producing EPS insulation boards, packaging products, ICF blocks, and other high-performance EPS applications, it ensures consistent density, improved material quality, and higher production efficiency.

Designed for continuous industrial production, the Dongshan High Precision EPS Batch Pre-Expander delivers reliable performance, low maintenance requirements, and outstanding operational stability. Whether integrated into a new turnkey EPS production line or upgrading an existing factory, it provides manufacturers with a dependable solution for producing high-quality EPS raw materials while improving productivity and reducing overall production costs.

Core Features

* High-precision density control for consistent EPS bead expansion

* Stainless steel expansion chamber with long service life

* Mitsubishi PLC automatic control system

* Automatic weighing and intelligent density feedback

* Steam recycling technology for lower energy consumption

* Korean vibration sensing system for accurate material level detection

* Stable batch production with high expansion consistency

* Easy operation, low maintenance, and reliable performance

Frequency spindle
The spindle rotation speed can be adjusted according to the raw material process, for ensuring that the material leve can control the expanding weight precisely.

Steam system
Adopt relief valve from YOSHITAKE,Japan, with high- precision drainage valve and filter to ensure steam pressure more stable.

Pressure control
International pressure sensor, German BATTON angle- seat valve and multi- valve exhaust system are used to ensure constant temperature and pressure expanding in the bucket, make sure the expanding process more stable and accurate.

Temperature control
The international temperature sensor and German BATTON steam and air dual proportional valve are used to control the temperature, so maintain the precise expanding temperature, for high – density expanding.

Weighing and feeding
Electronic weighing for feeding, and the feeding weight is setup on the touch screen. The weighing device will automatically weigh to achieve accurate feeding.

Material level control
Adopt the vibration sensor from Korea to control expanding material level precisely, ensuring the uniform density of raw material particles.
Material level of fluidizer bed: the height of material level can be adjusted to ensure the aging effect of expanded particles.
Flap feeding device of fluidizer bed ensure the high efficiency of expanding particle feeding .
Crushing device at bottom of fluidizer bed: to ensure convenient clean of fluidizer bed.

Mark
1. automatic weighing system of density is optional.
2. X-1400, X- 1670 second expandable function is optional.