The Poyatos Prima is one of the most successful concrete block machines in the world — not because it is the most powerful or the most automated, but because it delivers the perfect combination of production capacity, quality, simplicity, and affordability for manufacturers at the start of their concrete block production journey.

Among Poyatos's automatic block machines, the Prima model is one of the most economical, yet also offers significant production capacity without compromising quality — making it an ideal block making machine for entrepreneurs starting a concrete plant project.

In this complete guide, we explain exactly how the Prima block machine works — step by step — and cover the key technical specifications, the 4 Prima model variants (P50, P70, P75, and Prima L), what products it can produce, and who it is best suited for. By the end, you will have everything you need to decide whether the Prima is the right machine for your project.

What Is the Prima Block Machine?

The Poyatos Prima is a semi-automatic concrete block machine — a step above traditional manual egg-laying machines, but more accessible than fully automatic systems in terms of investment and infrastructure requirements.

This type of machine goes one step further than the classic block machine and uses a semi-automatic process. Instead of the machine moving (taking up excessive space), it is the trays themselves that move. Once the pieces are vibrated on wooden or metal trays they are removed by an operator with a trolley for transportation to the curing area. Finally, the pieces are manually palletized.

The Prima in numbers:

• Production capacity: 1,100 blocks per hour (20x15x40 cm blocks)
• Minimum installation area: 700 m²
• Electrical requirement: only 15.75 kW — suitable for areas with limited power supply
• Available in 4 variants: P50, P70, P75, and Prima L

This low electrical requirement is one of the Prima's most important advantages — making it one of the very few industrial-scale block machines that can operate in developing markets where power grid capacity is limited.

How the Prima Works: Step by Step

Understanding how the Prima block machine works helps you plan your plant layout, staffing, and production workflow correctly from day one.

Step 1 — Concrete Mixing

Raw materials (aggregates, cement, water, admixtures) are batched and mixed in a Poyatos turbo or planetary mixer connected to the Prima's feed system. The mixer delivers consistent concrete directly to the machine's filling system.

Step 2 — Mold Filling & Vibration Compaction

The concrete is fed into the Prima's mold box, which is positioned on a wooden or metal production tray. The vibration table activates — compacting the concrete into the mold cavities with the correct force and duration for the target block density and compressive strength.

Step 3 — Tray Transport

Once the pieces have been vibrated on wooden or metal trays, they are removed by an operator using a cart and transported to the curing area. This is the semi-automatic characteristic — the machine stays stationary while trays move, allowing for efficient use of plant floor space.

Step 4 — Curing

Green (freshly pressed) blocks on trays are transported to the curing area — either an open yard for natural curing or a covered curing room for accelerated curing. Minimum curing time depends on cement type, mix design, and ambient temperature.

Step 5 — Palletizing

After curing, blocks are manually palletized (in standard Prima configuration) or automatically palletized (in Prima L configuration). Palletized blocks are ready for storage, loading, and delivery.

Production flow diagram — Prima standard vs Prima L:

Prima Models Explained: P50, P70, P75 and Prima L

The Prima range includes 4 distinct models — each suited to different production requirements, plant sizes, and budgets:

What Makes Prima L Different from Standard Prima?

Prima L is the most automated and dynamic version. It includes the same Prima block making machine, but with a higher level of automation. This installation adds an elevator-descender assembly, which facilitates the process of moving the trays for curing the products. It also includes a clamp for the final palletizing of the blocks.

The key practical difference: with a standard Prima, 2–3 operators handle tray transport and palletizing manually. With Prima L, the elevator-descender and automatic clamp reduce this to 1 operator for oversight — increasing productivity per labor unit significantly.

Full Technical Specifications: Poyatos Prima Block Machine

General Specifications

Vibration System Specifications

Hydraulic Unit Specifications

Control Panel

• PLC with variable terminal for production parameter setting
• Data storage for production records and batch tracking
• Semi-automatic cycle control with manual override capability

What Concrete Products Can the Prima Produce?

The Prima block machine is compatible with a wide range of standard mold configurations — enabling manufacturers to produce:

Changing block types requires a mold change — a straightforward procedure that takes 20–60 minutes depending on the mold configuration. The Prima's flexibility makes it suitable for manufacturers serving multiple market segments from a single machine.

Adding finishing to Prima-produced blocks: Prima-produced blocks are fully compatible with Poyatos finishing machines — including the E-600 splitter, aging machine, and ColorMix system. All Poyatos finishing machines are designed to be compatible with Prima block machines and can be added at any time as a semi-automatic or fully automatic extension to your production line.

Prima vs Syncro vs Novabloc: Which Machine Is Right for You?

At Poyatos, both Prima and Syncro meet the highest quality standards and ensure a high production rate of concrete blocks — but they serve different stages of a manufacturer's growth. Here is how the three most popular entry and mid-range machines compare:

Going one step beyond the Prima, the main feature of the Syncro concrete block machine is the minimal maintenance it requires, with a synchronized vibration system powered by a VFD 15kW motor offering a fully automatic process and higher production.

Quick decision guide:

• Choose Prima if: budget is the priority, power supply is limited, you're starting your first plant, or you're in a developing market
• Choose Syncro if: you want more automation with similar investment and minimal maintenance
• Choose Novabloc if: you need higher volume with full automation and are willing to invest more upfront

Who Is the Prima Block Machine Designed For?

The Prima is not the right machine for every manufacturer — but for the right manufacturer, it is an outstanding investment. Here are the specific buyer profiles where the Prima excels:

Perfect for:

• First-time plant owners: Lower investment makes the barrier to entry manageable
• Entrepreneurs in developing countries: The Prima adapts to the needs and context of entrepreneurs launching projects in developing countries — requiring only 15.75 kW, making it viable where large electrical installations are not yet available.
• Small and medium market manufacturers: Producing for local construction demand that doesn't yet justify a fully automated line
• Specialized product manufacturers: Those producing a specific block type in lower volumes where the Prima's flexibility and simplicity is an advantage
• Start-up operations building toward growth: Begin with Prima, add automation components, and upgrade to Syncro or Novabloc as production volume grows

Consider Syncro or Novabloc instead if:

• You need more than 1,100 blocks/hour consistently
• You want to minimize labor dependency from day one
• Your market has reliable, high-capacity power infrastructure
• You are targeting high-volume construction contracts requiring large weekly delivery quantities

How to Set Up a Prima Block Machine Plant: Space & Infrastructure

Planning your plant layout correctly before the Prima arrives saves significant time, cost, and operational headaches after installation.

Minimum requirements:

Recommended plant layout zones for a Prima installation:

• Raw material storage: Aggregates, cement, water — adjacent to batching plant
• Batching & mixing: Poyatos batching plant + turbo or planetary mixer
• Block machine production area: Prima machine + tray handling space
• Green block curing area: Open or covered — sized for your shift production volume
• Finished block storage: For cured, palletized product awaiting dispatch

Poyatos provides complete 2D plant layout designs for every Prima installation — included as part of the machine delivery package. Never position your Prima without an engineered layout.

Is the Prima the Right Machine for Your Concrete Block Project?

The Poyatos Prima is one of the most proven, most deployed concrete block machines in the world — for a simple reason: it delivers industrial-quality block production at an accessible investment level, with minimal infrastructure requirements, in virtually any market condition.

If you are starting your first concrete block plant, operating in a developing market, or producing at a scale where the Prima's 1,100 blocks/hour capacity meets your demand — the Prima is the right machine. And when your business grows to require more automation or higher output, the Poyatos Syncro and Novabloc are natural upgrade paths that protect your operator training and spare parts investment.

At Poyatos, we have been helping entrepreneurs and manufacturers build successful concrete block businesses with the Prima since 1975 — across 80+ countries on 5 continents.