HOF Sonderanlagenbau GmbH

Freeze drying systems Vial & Bulk Systems

Vial and bulk systems – variety in top quality

Freeze drying systems

HOF is the specialist for individual solutions. That is why freeze drying systems are tailored individually and precisely to the task at hand and to the specific production requirements. And: This allows us to ideally adapt each system to the structural conditions on site. In this area, HOF offers a wider range of freeze drying systems, with regard to system size, model variants and optional equipment. The portfolio ranges from small pilot systems with a footprint from 2.5 m2 to systems with a footprint of 75 m2.

The following equipment variants are available:

• Vertical design
• Horizontal design
• Modular technical units which can be installed according to the building situation
• Door concepts:
• single door
• double doors (facing as a reach-through system)
• slot door especially for automatic loading and unloading systems
• slot door integrated into swivel doors
• The systems can be equipped with different cleaning and sterilizing units for aseptic processing areas and with systems for decontamination of the system periphery.
• System design for drying products with organic solvents
• Systems for process monitoring and process analysis
• Refrigeration systems:
• two-stage refrigeration sets with synthetic refrigerants
• cascade refrigeration sets with natural refrigerants
• LN2 refrigeration via heat exchangers for the installation areas and the ice condenser
• LN2 refrigeration as direct evaporation for the ice condenser

For the vacuum systems, HOF offers different variants for different requirements:

• Oil sealed rotary vane pumps with or without Roots-type blower
• Glandless pumps with Roots-type blower
• Screw compressor with or with or without Roots-type blower
• Upstream or downstream exhaust gas filtration

As a specialist for individual solutions, HOF can also supply systems for different requirements in bulk production:

• Systems with fixed shelves for loading with trays
• Systems with hydraulically height-adjustable shelves for easer tray handling
• Systems with tilting shelves for cascade filling, with the shelves designed as product pans The CIP/SIP process can be used here to reload the system with products without opening the chamber door.

Different systems are available for unloading. These are selected according to individual requirements. The same options are available for vial and bulk production systems.