Hydraulic Presses for Vacuum Pressing

Hydraulic presses for vacuum pressing Sitor are designed for compression moulding of rubber, plastics, composites, and other advanced materials under high pressure and temperature.
The key innovation is the ability to press sheets under vacuum, enabling a low-air-pressure environment inside the mould cavity for superior results.

Advantages of Vacuum Compression Moulding

Homogeneous structure: Achieve denser, more compact material with improved mechanical strength and longer service life.
Reduced closing time: The vacuum pre-evacuates the air, preventing strong airflow through the gap between the stamp and the mould.
Lower oxidation: Ideal for materials sensitive to heat and oxygen; vacuum pressing minimizes oxidation and material degradation.
Thin sheet production: Enables reliable moulding of sheets as thin as 3 mm.
Elimination of air bubbles: Produces products free from porosity and surface defects.
Enhanced material flow: Improves consistency and reduces internal stress within the moulded parts.
Stable and repeatable quality: Guarantees optimal mechanical properties for every cycle.

Sheets and components produced by Sitor’s vacuum compression moulding process feature excellent mechanical properties, high dimensional stability, and minimal internal tension, ensuring premium performance and long-term durability.

Vacuum Compression Moulding Press Sitor

PRESS OPTIONS AND

Technical specifications

We can design and build presses with the following characteristics and specifications, tailored to your requirements:

Vacuum	up to 50 mbar
Specific pressure	up to 1200 N/cm2
Temperature	up to 400 °C
Inner mould size:
•Width	up to 2.100 mm
•Length	up to 4.200 mm
•Frame height	up to 400 mm

Test Pressing of Samples

Customers can also perform test pressing of samples on our laboratory vacuum press.
This service allows you to evaluate material behaviour, surface quality, and process parameters before full-scale production.
Our specialists provide technical support and process optimization during testing to help you achieve the best possible results.

Find out more about our test pressing services at the link below:

Test Pressing Services

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