Our products at a glance:

It's a long way from raw materials through the mixture to the finished stone. Many plant components are involved in this process. Only if the system components are matched, can one be assured of a smooth process and economical operation of the block making plant. Learn about our Concrete block production plants.

It's a long way from raw materials over mixture to the finished (Curb)stone. Masa Curbstone presses were developed to fulfill among other criteria, the special requirements of the "British Standard" curbstones. This "British Standard" is still a condition in countries of the Middle East and the UK. Learn about our Curbstone production plants.

The manufacturing of autoclaved aerated concrete products demands high standards for mixing and dosing of the aggregates, the control of the fermentation process and the control of each production step. Masa's aerated concrete installations are proven advanced technology processes, designed according to customers specific requirements. This approach allows complete solutions to ensure highly efficient, optimised processes resulting in consistent final product quality. Learn about our AAC production plants.

It's a long way from raw materials through the mixture to the finished sand lime bricks. Many plant components are involved in this process. Only if the system components are matched, can one be assured of a smooth process and economical operation of the sand lime brick production plant. Learn about our Sand lime brick production plants.

The slab press UNI 2000 is the heart of any plant for the manufacture of concrete slabs. In addition, dosing and mixing plants, take-off devices with direct washing units and storage systems as well as machines and equipment for slab refinement and packaging are required. Masa can offer the complete know-how for the production of concrete slabs. This is the decisive advantage for our customers: Planning, design, manufacture, assembly, commissioning, training, maintenance and continuous support during production – all from one supplier. Learn about our Concrete slab production plants.

Masa LithoPore® is a mineral building material that is processed into a vapour-permeable thermal insulation panel. Learn more about Masa-LithoPore®

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Masa hermetic slab press UNI 2000

For today and the future.

Robust design concept and short cycle times.

In the hermetic pressing method, two concrete layers are compacted hydraulically. The first layer is rather liquid when it is filled into the mould. For this, the mould frame has to be sealed hermetically with the lower surface (face plate). This is what gives this method its name. In the next step, an earth-moist second concrete layer is put (dosed) onto the first layer, and both layers are compacted hydraulically.

For short cycle times, the manufacturing process is carried out in several steps. These are distributed cyclewise to the individual stations of the press. Depending on the type, the presses are equipped with six or seven stations. For presses with a pressing power of up to 500 tons, station 5 "Pre-compaction" is not required.

  • Station 1: Face mix feeding

    Here, the first, liquid concrete layer is filled into the mould frame volumetrically. Two types of dosing devices are available, a hose dosator or a disc feeding device. Both systems guarantee a precise volumetric dosing of the face mix material.

  • Station 2: Face mix distribution

    The face mix material is uniformly distributed and deaerated by means of a vibration system. A distribution plate that is lowered into the mould supports this process.

  • Station 3: Mould change

    Here, the individual mould frames can quickly and easily be changed. If required, this station can also be used as a second face mix distribution station.

  • Station 4: Back mix feeding

    In this step, the second, earth-moist concrete layer is put into the mould. With the help of the back mix feeding device, the mould can be filled completely up to the upper edge, and parts can also be overfilled. This method guarantees precise and uniform thicknesses of the finished slabs.

  • Station 5: Pre-compaction

    In this station, the compacting process starts. Designed as vibrating station or hydraulc pressing station, the water exchange between the moist face mix material and the relatively dry back mix material is triggered here. This reduces the required main pressing time.

  • Station 6: Main compaction

    Here, the two concrete layers are finally joined. Depending on the used materials, the Masa control system allows a stepless adjustment of the pressing process and the determination of the required pressing power. At the end of the pressing process, the water is uniformly distributed in face mix and back mix concrete.

  • Station 7: Ejection of the products

    The fresh slab is taken from the press. To de-mould the slab, the mould frame is pneumatically removed from the face plate (mould lower side). The slab freely hangs in the mould frame now and can be ejected downwards. For this, the slab carrier moves under the mould frame. It is lifted up to the lower edge of the mould frame to support the slab when it is de-moulded. An ejection cylinder presses the slab out of the mould frame and onto the slab carrier. The slab carrier and the ejection cylinder move downward simultaneously until the slab is de-moulded. Then the slab carrier moves out of the working area of the press.

General press features:

  • Robust portal construction for an optimum intake of the pressing power
  • Controlled servo turntable drive with optimum acceleration and deceleration behaviour for short cycle times
  • Compressed air docking for low wear and tear and prevention of leakages
  • Multi-level back mix feeding for a uniform slab thickness
  • Hydraulic system: Capacity, pressure, and volume control

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