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Freeze Dryer Manufacturers and Companies

IQS Directory is a top industrial directory listing of leading industrial freeze dryer manufacturers and suppliers. Access our comprehensive index to review and source freeze dryer manufacturers with preview ads and detailed product descriptions. These freeze dryer companies can design, engineer and manufacture freeze dryers to your specifications and application need. A quick and easy to use request for quote form is provided for you to contact these freeze dryer manufacturers and suppliers. Each company has detailed profile information, locations, phone number, website links, product videos and product information defined. Read customer reviews and product specific news articles. We are the right resource for your information requirement whether its for a manufacturer of sublimation freeze dryer, preserving freeze dryers, flask freeze dryers.

  • Louisville, KY 502-969-3171

    Carrier is a manufacturer of high quality dryers in addition to many other related products, including coolers, screens, air knife separators, spiral elevators, feeders & conveyors. Industries served include chemicals, synthetics, foundry, glass, pharmaceutical, explosives, wood, metal, scrap & recycling. Carrier’s custom-engineered solutions extend to plant sites around the world.

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  • De Pere, WI 920-336-5715

    Dürr Megtec provides customized systems for: regulatory compliance; improvement in working environment and in neighbor relations by reducing odor from industrial processes and helping to reduce greenhouse gas emissions and process energy management. Dürr Megtec provides thermal and catalytic oxidizers, solvent recovery and distillation equipment, particulate control with wet and dry electrostatic precipitators and scrubbers, fabric filters (baghouses), etc . To learn more visit our website!

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  • Watertown, WI 920-261-8107

    Established in 1980, Baker-Rullman Manufacturing, Inc. is a leader in the engineering, design, and fabrication of rotary drum dryers, modular steel bins and hoppers, structural steel, feed and seed mill systems, and custom metalwork. At Baker-Rullman Manufacturing our team of experienced, knowledgeable engineers are ready to get your project off the ground. With more than 30 years of project management experience, we can develop custom designed turn-key solutions to meet your needs!

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  • Green Bay, WI 920-468-1000

    Since 1951, FEECO has designed and manufactured both direct and indirect rotary dryers for a variety of industries around the world. All dryers are customized to fit the unique processing requirements of the material, with material testing/process development assistance available, in addition to post-sale support including inspections, parts replacement, and more.

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  • Carnegie, PA 412-788-9810

    For over 125 years, Heyl Patterson has custom-engineered thermal processing solutions that are trusted in dozens of industries worldwide. We specialize in high quality drying equipment, such as Rotary Calciners, Rotary Dryers, Fluid Bed Dryers, Flash Dryers, Disc Dryers, Sludge Dryers, Conduction Dryers and Soil Remediation Units. Our pilot plant testing lab helps determine the best technologies and equipment for any application, and we support our clients for the life of their equipment.

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businessIndustry Information

Freeze Dryers

Freeze dryers lower the temperature of a substance to the point that sublimation and dehydration occur. This process is typically used to preserve a perishable item or material and make it more convenient for transport. When performed in a laboratory setting, freeze drying is done in a flask; for large or industrial scale freeze drying, a machine is used.

There are three main kinds of freeze dryers: rotary, manifold and tray freeze dryers. Rotary freeze dryers are generally used when working with liquids. Small amounts of material are frozen by manifold dryers, and tray freeze dryers produce the driest product ready for long-term storage. Freeze dryers are used by the pharmaceutical industry for increasing the shelf life of vaccines, for preserving certain strains of bacteria and for ease of storing and shipping certain products. Freeze drying removes water and bulk while maintaining flavors and nutritional content and is subsequently used with food and beverages like instant coffee, fruit and herbs. Freeze drying is also useful in chemistry and biotechnology because it can make products easier to dissolve in water and remove impurities. Some museums or conservation agencies use freeze dryers to dry and preserve artifacts, manuscripts and animal or floral specimens.


The three kinds of freeze dryers - rotary, manifold and tray - vary in size and material. The industrial machines are typically tray freeze dryers and can be hundreds of feet long, either vertically or horizontally oriented. Stainless steel is most commonly used because it is sanitary and can be temperature controlled very effectively. Products are held on trays on shelves in large boxes or carried on a conveyor belt if the dryer is continous. Freeze drying is a three step process. During the initial freezing, the material inside the dryer is cooled below its triple point, which is the lowest temperature at which the solid and liquid phases of the material can exist at the same time. The temperature is usually between -50° and -80°C, and this is the most important step of the process. After the material is frozen it enters the primary drying phase. The pressure is lowered and enough heat is provided that sublimation occurs. Adding a vacuum to the dryer helps control and maintain pressure, and a cold condenser plate or chamber gives the water vapor a surface to freeze onto after it leaves the material. The last step removes any unfrozen water molecules. In the secondary drying phase the pressure is lowered again and the temperature is raised, sometimes above the freezing point of 0°C. Any residual water evaporates from the substance, and the final water content is less than 5%.



Freeze Dryers
Freeze Dryers
Freeze Dryers - Central Air Compressor
Freeze Dryers - Central Air Compressor



Freeze Dryer Informational Video