This section provides an overview for vacuum dryers as well as their applications and principles. Also, please take a look at the list of 47 vacuum dryer manufacturers and their company rankings. Here are the top-ranked vacuum dryer companies as of December, 2023: 1.Comi Polaris Systems, Inc., 2.HEINKEL Drying and Separation, 3.Processall.
A vacuum dryer is a device that creates a vacuum or decompressed state in a sealed space to perform drying.
This reduced-pressure condition is based on the principle that the temperature required for moisture to evaporate from the object is lowered. Compared to ordinary hot-air dryers, these dryers can dry at lower temperatures, making them useful for effective drying in a short period of time.
Another feature of this dryer is that it does not damage the surface of the object to be dried, and it is often used in university science and engineering laboratories and in the food processing industry. Since the ambient temperature drops due to the heat of vaporization generated when moisture evaporates, pre-drying is necessary to achieve efficient drying.
Vacuum dryers are mainly used for the following applications
Specific fields of application include the following
Vacuum dryers are used in the production of freeze-dried products. By vacuum drying food after freezing it, it is possible to process it while maintaining flavor and freshness.
Vacuum dryers are also used in the production of instant coffee, powdered seasonings, and dairy products.
Vacuum drying is particularly suitable for processing resins to avoid the effects of moisture absorption and humidity. It enables uniform drying at low temperatures and helps maintain the quality of molded products.
Care should be taken because the presence of excess moisture during the molding process can cause hydrolysis of the resin during heating, accelerated thermal decomposition due to water, and cracking due to evaporation. In addition, resin may undergo thermal decomposition depending on the drying temperature, and performance can be maintained by drying at a temperature where there is no risk of thermal decomposition.
For electronic components such as motor coils, transformers, and communication cables, insulation failure and moisture damage can be fatal. Vacuum drying effectively dries even the inside of these components, thus maintaining their quality.
Precision machined parts have complex shapes and numerous holes, making them difficult to dry with hot-air dryers. Vacuum drying is used to dry sintered parts and metal powders homogeneously from the inside.
In the case of porous materials and powders, if the thermal conductivity of the material is low, there are cases where the material will not dry uniformly inside. Drying efficiency is increased by raising the temperature of the dried material beforehand.
High-speed vacuum dryers and warm air circulation heating are used to raise the temperature of dried materials more quickly in vacuum drying. Even for objects with low thermal conductivity, warm air circulation heating can raise the temperature quickly, leading to shorter processing times.
A vacuum is created by lowering the atmospheric pressure in a sealed space with a vacuum pump. Utilizing the principle that a decrease in air pressure lowers the boiling point, efficient drying is possible.
Vacuum dryers have a simple structure consisting of a sealed container with an electric heater, a gas exchange valve, and a vacuum gauge. Depending on the type, a cooling trap is installed to recondense vaporized water vapor.
Collecting water in the cooling trap prevents water from flowing into the vacuum pump. Water inflow leads to oil deterioration, so care must be taken.
There are two main types of vacuum pumps: gas transport and gas hoarding. The gas transport type discharges gas externally and can be divided into two types: volumetric transfer type and momentum transfer type.
The volumetric transfer type periodically discharges a fixed volume of gas, while the momentum transfer type continuously discharges gas by imparting momentum to it.
Typical pumps are positive displacement oil rotary pumps and dry pumps.
Oil rotary pumps use lubricating oil for sliding parts, which provides excellent mobility and sealing properties. It is the most efficient type of pump. The disadvantage is that the lubricating oil must be replaced periodically, making maintenance time-consuming.
A three-leaf rotor is contained in the pump, and the air in the container is discharged by high-speed rotation of the rotor. Since it does not require lubricating oil, it can exhaust air with minimal environmental impact.
*Including some distributors, etc.
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Ransohoff was founded in 1916 and is located in Cincinnati, Ohio. Today, the company is a division of Cleaning Technologies Group. Cleaning Technologies Group is a provider of innovative process technologies to precision and industrial global manufacturing markets. Ransohoff is a manufacturer of aqueous and solvent-based parts cleaning systems as well as a complete line of recyclable aqueous chemistries and waste minimization technologies. The company serves market sectors including electrical components, optics, general manufacturing, heavy-duty trucks, and off-road vehicles. The company offers industrial parts washers, ultrasonic and megasonic cleaning systems, benchtop cleaning systems, and electronic cleaning systems.
Marion Process Solutions, founded in 1938 with headquarters in Marion, Iowa, USA, is a manufacturer of industrial mixing and blending equipment. The company's product line includes horizontal batch and continuous mixing machines, lump breaking machines, tumbling blender machines, and the Marion WaveMix industrial drying system that combines microwave, vacuum, and mixing technologies. The company offers a range of typical equipment integration configurations for processors as well as custom-engineered systems to meet application-specific requirements. The company serves various markets, including food processing, chemical processing, pharmaceuticals, agriculture, and ethanol production.
Georgia Thermal Products (GTP), founded in 2016, is a manufacturer of vacuum ovens and related equipment based in Georgia, USA. The company specializes in manufacturing vacuum ovens and offers solutions to various processing needs, including those in explosion-proof and hazardous locations. The company emphasizes hot-wall vacuum ovens and tray dryers, setting them apart with its remarkable temperature capabilities, capable of reaching temperatures as high as 600°F. These systems have advanced vacuum and atmospheric features to optimize performance.
Processall, headquartered in Ohio, USA, has been a manufacturer of industrial mixing equipment since 1983. The company manufactures a range of horizontal plow mixers, plow pressure reactors, and plow vacuum dryers. These products are essential for various industries, including chemical, food, and pharmaceuticals. The company designs and manufactures mixers tailored to specific industry needs. Its mixers can even be manufactured in compliance with FDA food and pharmaceutical Good Manufacturing Practice Regulations (GMPs), ensuring quality standards for human pharmaceuticals. The company has additional facilities in Indiana, China, and Thailand with manufacturing facilities that are ISO9001:2015 certified.
HEINKEL Drying and Separation Group is a manufacturer of advanced equipment for drying, filtration, and solid-liquid separation processes based in Germany. Founded in 1884, the company offers a comprehensive range of equipment, including centrifuges, vacuum dryers, filtration equipment, and mixing & process systems. These products are found in a diverse range of industries including, pharmaceuticals, chemicals, food & beverage, environmental, minerals & mining, oil & gas, and more. Additionally, the company offers custom solutions to meet the unique requirements of its clients. The company operates in numerous countries which ensures it provides support, service, and equipment to customers globally.
Comi Polaris Systems, Inc., founded in 2013 and headquartered in Charlotte, North Carolina, is a manufacturer of separation and drying equipments. The company offers a compete line of filtering centrifuges, filter dryers, and vacuum dryers, which are designed to enhance the quality and purity of products by effectively eliminating impurities, moisture, and other unwanted substances. These are used in industries such as chemical, starch, food & beverage, and pharmaceutical. Additionally, the company also provides valuable services like preventative maintenance and emergency support to ensure smooth operations and maximize productivity of industrial operations.
Sugino Machine Limited., established in Japan, is a manufacturing company of precision engineering and industrial machinery for high-pressure cleaning, drilling, waterjet cutting, and more since 1936. The company offers a wide range of products and solutions for different industries, including automotive, aerospace, and electronics. Their product lineup includes high-pressure waterjet cutting systems, robotic systems, and machining centers. They continue to provide cutting-edge solutions and contribute to the advancement of industrial processes.
ROSS Mixers, founded in Hauppauge, New York, in 1842 is a manufacturer of mixing, blending, dispersion and drying equipment for chemical, food, and pharmaceutical. The company's product portfolio includes Blending Equipment, Control Systems, Dispersion Equipment, Drying Equipment, and Pressure Vessels, Storage Tanks and reactors. Their products are used in industries such as Food and Beverage Processing, Pharmaceutical and Biotechnology, Chemical and Petrochemical, , and healthcare. The company operates from eight facilities located in the USA, China and India.
Paul O. Abbe, headquartered in Wood Dale, Illinois, is a manufacturer of standard and custom process equipment. Some of the products that the company offers include Rota-Cone Blenders, Dual Shaft Ribbon and Paddle Mixers, Double Arm Mixers, Double Arm Mixer Extruders, and CrossMix Fluidizing Mixer. These products are used for blending solids and light pastes in all process industries. The company is a member of several associations including the International Fine Particle Research Institute, Society of Chemical Manufacturers and Associates, Process Equipment Manufacturers Association, The American Ceramic Society, and The Porcelain Enamel Institute.
Spartanics, founded in the United States in 1963, is a manufacturer of laser cutting, die cutting, and hot stamping machines. The company's product portfolio includes die cutting machines that excel in precision cutting and shaping of materials like paper, cardboard, plastics, and textiles and laser cutting machines offer the utmost precision in cutting a wide range of materials, from metals to composites and more. They find applications in industries such as automotive, aerospace, and signage manufacturing.
Compressed Air Systems was founded in Tampa, Florida in 1963. Compressed Air Systems supports customers in a wide array of industries including food & beverage, medical applications, industrial, electronics, fleet maintenance, aerospace, pharmaceuticals, plastics processing, CNC machine shops, and woodworking. Compressed Air Systems sells air compressors, railcar gate openers and various related products. Compressed Air Systems also offers services including audit, leak compressed air leak elimination, compressed air rentals, and turnkey packages for industrial equipment systems.
SATO VAC INC., established in 1932 and based in Tokyo, Japan, is a manufacturer of vacuum equipment including vacuum pumps, measuring instruments, and parts & components. Its production line is segmented into vacuum pumps, gauges, and equipment used in space development, semiconductors, energy, medical, optics, and automobile industries. The company's vacuum equipment includes compact CVD systems, vacuum defoamers, heat treatment furnaces, dryers, and evaporation systems. The company's production process involves structural designing, prototype creation, design review, and performance testing.
DE DIETRICH SAS, founded in 1684 and headquartered in Tokyo, Japan, is a manufacturer of process equipment and solutions for the fine chemical, pharmaceutical and allied industries. The company offers a range of solutions in reaction, mixing, heat transfer, filtration and drying operations, proprietary processes such as acid concentration and solvent purification, as well as FDA and cGMP compliant multi-purpose synthesis plants. It also engineers and installs turnkey processing systems along with providing field service for the installation and maintenance of glass lined equipment. The company offers a range of equipment that can be rented to perform product tests.
Ulvac Inc., established in 1952 and headquartered in Kanagawa, Japan, is a manufacturer of vacuum equipment, components, peripheral devices, and materials for the solar cell and semiconductor industries, among others. The company operates businesses in six areas, including materials, components, electronic devices, semiconductors, and flat panel display production equipment. Some of its products include roll coaters, semiconductor production equipment, LED production equipment, leak detectors, and vacuum brazing furnaces. It is ISO9001 certified, and its net sales in the 2022 fiscal year were 227.5 billion Japanese Yen, with 34% of this amount coming from semiconductor and electronic device production equipment.
EKATO HOLDING GmbH, based in Germany, has been a manufacturer and supplier of industrial agitation and mixing equipment since 1933. The company shares its expertise in manufacturing agitators, reactors, and industrial mixing systems. These products are essential components in various industries, including chemical, pharmaceutical, food and beverages, and many others, where efficient mixing and agitation are crucial for production. Additionally, the company provides complete mixing systems tailored to the specific requirements of different industries, ensuring the efficient and homogenous blending of various substances.
HEINKEL Process Technology GmbH is a manufacturer of equipment and systems primarily related to solid-liquid separation processes based in Germany. Established in 2004, the company offers diverse products tailored to solid-liquid separation and related processes, including vertical centrifuges, horizontal peeler centrifuges, sedimentation classifying centrifuges, and inverting filter centrifuges. The company also offers equipment for various procedures, such as Nutsche filters and filter dryers, laboratory and pilot plant equipment, separation systems, and used machines. The company's equipment finds applications across various industries, including pharmaceutical, chemical, food products, and surface coating.
PÜSCHNER Microwaves, founded in 1970, is a manufacturer and technology provider in industrial microwave heating and drying applications based in Germany. The company specializes in industrial microwave heating and drying applications, catering to a wide range of industries, including biotech, ceramics, food technology, nanotechnology, medical technology, and the chemical & pharmaceutical sectors. Its strength lies in its ability to manufacture customer-specific systems tailored to optimize specific applications. The company's product line includes continuous microwave dryers, microwave vacuum dryers, microwave freeze drying, and continuous microwave flow heaters.
Amixon is a mixing equipment manufacturer established in 2003 and headquartered in Paderborn, Germany. The company produces a range of vacuum dryers, reactors for chemically altering mixtures, granulators, and mixers that can work with dry, wet or suspended materials. Their products are built to the standards of seven international regulatory organizations including the FDA, EHEDG, and ATEX. Amixon supplies clients in the pharmaceutical, beauty, chemical, and plastics sectors via its network of distribution centers across six continents.
PerMix North America, established in Chicago, IL in 1958, is a manufacturer of Industrial Mixers used in various industries for mixing pastes, powders, liquids, or de-aerating. Their product portfolio includes High Shear Pumps, Ribbon Mixers, Sigma Mixers, Plow Mixers and Drum Mixers, used in various industries including fine chemicals, petrochemicals, painting, ink, cosmetics, pharmaceuticals, and agriculture. PerMix North America has an office in Isrea, as well as factories in North America, Europe and China.
Weiss Technik, established in Reiskirchen, Hessen in 1979 is an industrial machinery manufacturer engaged in environmental simulation systems such as climate solutions, clean room and containment solutions. Their product range includes environmental stimulation, product configurator, heat technology, air conditioning and pharmaceutical technology. The company has technical and customer service all around the world. Their engineers and designers develop and produce heating technology systems for virtually any field of application such as heating/drying ovens, clean room drying ovens, hot-air sterilizers, microwave systems and industrial ovens.
Across International is a manufacturer of laboratory equipment and instruments based in the USA. Established in 2008, the company offers a wide range of products designed for scientific research, including laboratory ovens, vacuum pumps, rotary evaporators, and other essential equipment used in laboratories and research facilities. The equipment is used in scientific research and laboratory work across a range of fields, including chemistry, pharmaceuticals, materials science, and more. The company is ISO9001:2015 certified for quality management systems.
Busch Vacuum Solutions was founded in 1963 in Virginia Beach, Virginia, US, as a manufacturer of vacuum pumps and systems, compressors, and blowers. The comprehensive product portfolio encompasses solutions tailored for vacuum and overpressure applications across diverse industries, such as chemicals, semiconductors, plastics, and food. The products have a wide array of applications, ranging from packaging food and sterilizing medical equipment to lifting substantial steel tubes. They also play a crucial role in combating diseases, addressing malnutrition, and facilitating the process of digitalization.
Yenchen Machinery Co., Ltd., established in 1967, is based in Taoyuan, Taiwan, as a manufacturer and supplier of pharmaceutical machines. It specializes in manufacturing pellet and coating machines, high-shear mixers, and solid dosage lines. Its products are equipped with HEPA filters and thermal ristribution instruments to ensure product quality. Its manufactured products are utilized in pharmaceutical, food, biotechnology, chemical, and cosmetic sectors across Europe, America, Africa, and Southeast Asia. The company has partnered with several companies, such as Pfizer, Novartis, Boehringer Ingelheim, and Daiichi-Sankyo. It acquired ISO 9001:2015 certification and received the Honorable Mention Award in Intelligent Product Competition in 2023.
Jnbang Light Ind Machinery Co.,ltd, founded in China in 1997, is a manufacturer of black soldier fly automated breeding equipment, vacuum belt dryers, and CBD oil extraction machines. In addition to its specialized products, the company also offers an environmental protection concentrator that is mainly adapted to the concentrated production process of traditional Chinese medicine, health care products, natural seasonings, and food additives. The company provides a range of services such as consulting, scheme design and manufacturing, budget, on-site installation, and after-sale maintenance for clients in the pharmaceutical, food, biological, and chemical industries.
Italvacuum is an Italian company based in Turin (Italy), specialised in the design, manufacture and supply of industrial vacuum piston pumps and industrial vacuum dryers for the pharmaceutical, fine chemical and chemical industries. Founded in 1939, Italvacuum has always grown with the aim of reaching and maintaining the highest levels of innovation and quality in its field. The development of technology, know-how and meticulous care taken of its customers are the company’s universally recognised hallmarks. With more than 80 years of experience, Italvacuum has world-wide installations and is considered a point of reference in vacuum process equipment technology.
TOP Cloud-agri, founded in 2008 and based in Hangzhou, Zhejiang Province of China, is a manufacturer and designer of agriculture testing instruments. The company produces products such as weather monitor instruments, food safety instruments, flour and oil testing instruments, and general lab equipment. All the testing instruments made by the company are used in seed breeding, cleaning, storage, and water quality detection. The company holds 14 national invention patents, 20 appearance patents, 57 utility model patents, and 70 software copyrights with ISO 9 0 0 1, ISO 1 4 0 0 1, and ISO 4 5 0 0 1 certificates.
13 products are listed.