Extruder for Hollow Core Slab Production: Innovative Forming Technologies for Multiplying Precast Plant Profitability

The modern precast concrete industry requires maximum automation, cost reduction, and uncompromising product quality. At the core of solving these strategic business challenges is a continuous, uninterrupted slipforming process.
A reliable and high-performance extruder for hollow core slab production becomes the key asset of a precast plant, enabling manufacturing of elements with perfect geometry and superior mechanical strength. Implementation of a premium extruder hollow core slab from the Finnish manufacturer TDM Engineering Oy not only accelerates the production cycle, but also significantly reduces maintenance costs, ensures continuous casting, and guarantees rapid return on investment.

Intelligent Concrete Compaction: Eliminating Downtime and Reducing Operating Costs

From a technical perspective, the extrusion process combines engineering simplicity with maximum efficiency. A modern hollow core slab extruder feeds low-slump concrete through a dedicated compaction unit. Inside this unit, heavy-duty rotating augers generate extremely high pressure, resulting in optimal concrete densification and precise placement onto the prepared casting bed in the required profile geometry. A distinctive feature of the equipment is the complete elimination of complex gearboxes and cardan shaft transmissions.

This structural solution permanently removes the need for costly repairs and production downtime. Forming speed ranges from 1.4 to 3.5 meters per minute, depending on product type and concrete parameters. The machine operates from a standard industrial power supply. The base hopper capacity is 1.5 m³, with an optional extension up to 3.0 m³. The front section is engineered to hermetically enclose all critical operating components, protecting them from concrete contamination.

Industrial Application: UniMould Platform Versatility for Product Range Expansion

In practical production environments, the high-performance hollow core slab extruder enables precast plants to respond flexibly to market demand. Equipment based on the modular UniMould platform manufactures hollow core slabs, solid panels, piles, beams, and lintels. Available industrial configurations include:

• S Series – Flagship model equipped with an 11-inch touchscreen monitor and machine learning functionality.Supports casting beds of 1200, 1500, and 2400 mm width, with product heights ranging from 120 to 600 mm.
• N Series – High-capacity solution for stable production of elements up to 500 mm in height on 1200, 1500, and 2400 mm beds. Equipped with an 8-inch color display.
• L Series – Cost-efficient solution for flexible production of thin wall panels and partitions. Operates on 1200 mm beds with product heights from 80 to 220 mm.

The technology is widely implemented in Finland, the United Kingdom, Italy, CIS countries, and Asia. The machine track width exceeds slab width by only 60 mm, and it travels on rails that simultaneously function as chamfer formers.

Independent Auger Drive and Wear Resistance: Ensuring Rapid Payback

Integration of advanced extrusion systems into a unified technological chain provides significant operational advantages:

1. Independent auger drive – Enables dynamic control of all forming parameters and ensures maximum compaction density, particularly when processing low-slump concrete mixes.
2. Innovative high-frequency vibration beam – Guarantees uniform vibration distribution across the entire working surface, while maintaining low acoustic emission.
3. Superior wear resistance – Hopper, void formers, mass-guiding pallet, and side shaping armor plates are manufactured from high-strength abrasion-resistant materials.
4. Intelligent and intuitive control – System start-up is activated by a single touch command, while all critical production parameters are continuously displayed on the monitor.
5. Ergonomics and safety – The compaction unit includes a wide service platform with foot supports, and the hopper is equipped with ladders on three sides for convenient operator access.

Strategic Investment in Scalable Growth

The industrial hollow core slab extruder from TDM Engineering Oy represents a comprehensive technological solution for confident expansion of your precast business.

Thanks to its modular architecture, independent auger drives, and advanced reciprocating compaction method, the equipment delivers exceptional reliability and simplified operation.

Adjustable casting height for production over insulation layers and adaptability to various fire-resistance classes make this solution a benchmark in the global precast market.

Modernize your production today to manufacture world-class products. Contact our engineers for a detailed professional consultation and equipment ordering.