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Styrofoam EPS Pre Expanding Machine

This advanced EPS pre-foaming machine is designed for expanding polystyrene granules into uniform foam beads. Built according to CE standards, it ensures safe operation, stable performance, and reliable quality. The equipment features precise density control, efficient steam expansion, and high production efficiency, producing consistent EPS beads for further molding processes. With energy-saving design and automatic control, it helps manufacturers improve productivity while maintaining stable foam quality for packaging, insulation, and EPS molding applications.

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Hangzhou Fuyang Dongshan Plastic Machinery Co., Ltd. is one of the most reliable manufacturers and suppliers of styrofoam eps pre expanding machine in China, also supports customized service with low price. Welcome to wholesale high quality styrofoam eps pre expanding machine for sale here from our factory. Contact us for pricelist.

Advanced CE Standards Styrofoam Pre-foaming Machine EPS Expansion Equipment for Polystyrene granules production

Process Kinetics & Throughput Optimization

High-Efficiency Flow Architecture:

Features a large-diameter butterfly valve for rapid vacuum stabilization and optimized discharge. The integration of a DN 150 feeding valve reduces material transfer time by 6–8 seconds, while the vacuum buffer tank architecture significantly enhances pre-vacuum efficiency.

Synchronous Multi-Phase Operation:

The dual-barrel vacuum feeding system enables concurrent discharging and feeding cycles, eliminating latent downtime and ensuring an uninterrupted production flow.

Advanced Material Handling & Homogenization

Synchronized Distribution:

Employs a four-port discharge configuration for balanced material release. The vacuum system utilizes multi-point air supply logic to ensure uniform particle ventilation and prevent density gradients.

High-Density Material Adaptation:

The stainless steel, wind-shielded feeding mechanism is specifically engineered for high-durability performance when handling heavy or high-density materials.

Thermal Conservation & Agitation:

Features high-density insulation to minimize thermal dissipation. The frequency-controlled stirring spindle supports variable-speed agitation, allowing for precise process customization based on material grade.

Features

Stable density control with ≤ ±3% tolerance;
Closed constant- pressure foaming, suitable for high altitude areas;

High- quality hot air drying system for uniform beads;
International brand components ensure long service life;
Easy operation with PLC & recipe memory Advantages.

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.

Technical Specifications

Number	ltem		Unit	DSPV1200
1	Expand Chamber	Chamber	mm	φ1200×1470
1	Expand Chamber	Effective Volume	m²	1.35
2	Steam	Entry	inch	DN50
2	Steam	Pressure	Mpa	0.5-0.6
3	Compressed Air	Entry	inch	DN40
3	Compressed Air	Pressure	Mpa	0.55-0.7
4	Drainage	Upper Vent	mm	DN150
4	Drainage	Down Vent	mm	DN100
5	Capacity	12g	KG	600-800kg/h
		18gl	KG	900-1200kg/h
		25gl	KG	1100-1300kgh
		32gl	KG	1200-1400kgh
6	Total Power		KW	31.05
7	Expanding Tolerance		%	≤±0.5%
8	Overall Size(L×W×H)		mm	2300×2300×6000
9	Weight		KG	5500