Green coffee impurity levels vary across origins even on specialty coffee, more and more companies are moving to in-roastery cleaning. IMF designs modular green-coffee cleaning lines that remove foreign matter, stabilize roasting performance, and raise the commercial value of your finished product.
Pre-cleaner screen, aspiration channel, magnetic separator, destoner, wind sifter; optional metal detector or optical/color sorting on request.
with ducting to the central filtering unit; walkable service decks, guarded inlets, interlocked access.
PLC/HMI with recipe management, trend logging, alarms, and remote service; easy tie-in to plant SCADA/ERP.
VFD-driven fans, optimized airflow paths, reduced fugitive dust and waste, lower overall energy per ton.
Commissioning, operator training, preventive maintenance plans, and rapid spares availability.
(Two-Deck Pre-Cleaner)
The IMF Cleaning Sieve is a two-deck pre-cleaner designed for efficient removal of oversize impurities on the upper deck (e.g., cords, husk, coarse debris, rocks, cocoa peals) and fines/broken beans on the lower deck.
An integrated aspiration channel (air separator) extracts dust and light fractions to deliver cleaner green coffee to downstream processes.
The IMF Dry Destoner is designed to remove high-density foreign bodies from green coffee beans, such as stones, glass, or pieces of metal, ensuring safe downstream processing and protecting both product quality and equipment.
Using a combination of vibrating decks and controlled air flow, the system efficiently separates heavier contaminants from the coffee stream.
IMF Magnetic Separation Systems capture ferrous contaminants before they reach sensitive equipment.
Choose between a rotary drum magnet for continuous, self-cleaning operation or extractable magnetic grids (enclosed housings available) for compact drop-chute installations.
IMF Free-Fall Metal Detectors identify ferrous and non-ferrous metals (including stainless steels, depending on model) in gravity chutes.
A high-speed reject flap diverts contaminated product, minimizing product loss and protecting downstream assets.
IMF integrates optical sorting technology into its coffee processing lines, ensuring the most advanced defect removal available for the industry.
These systems use multi-spectrum cameras (RGB, NIR, and SWIR) and high-speed ejectors to guarantee precise separation of defective beans, foreign bodies, and impurities—delivering cleaner green coffee and more consistent roasting results.
Protect coffee quality from the very first stage of the process. IMF cleaning and sorting systems are engineered to remove foreign materials and defects while preserving bean integrity, ensuring a cleaner, safer and more consistent roasting process.
Efficiently removes stones, metals, dust, husks and other foreign materials before roasting, protecting both product quality and downstream equipment.
Designed for gentle handling throughout the cleaning process, minimizing bean damage and preserving the integrity of every batch.
Mechanical, magnetic and optical technologies can be combined to create a complete cleaning line tailored to your coffee and production requirements.
Prevent contaminants from reaching the roasting stage, reducing machine wear, minimizing downtime and improving operational safety.
Seamlessly connects with intake, storage and conveying systems, creating a continuous and automated green coffee preparation line.
Every cleaning and sorting system is custom-designed to match your plant layout, capacity and quality standards.
Advanced solutions for the efficient and safe reception of green coffee, whether in bags, big bags, or bulk delivery.
From compact indoor layouts to large outdoor installations, every silo is engineered to protect quality, optimize workflow, and integrated to each project.
A smart software tool that monitors and manages green coffee storage, preventing cross-contamination and reducing downtime.
We spent months researching, testing, and tasting before finally bringing home our first IMF air roaster. The results were a revelation. This machine unlocked a new dimension of clarity and sweetness in our coffees like Raxidi Lobo Estate, Ratnagiri Estate YC01.
IMF – 60 kg (2020) This machine took me into professional roasting. A combined drum + hot-air system with energy-efficient heating, afterburner, filter, and a destoner to remove any foreign particles. Because the system is closed and uses controlled hot air, it keeps the roast clean, even, and stable — no burnt spots, no uneven heat, no weather influence. Summer heat or winter cold doesn’t matter; the roast curve stays the same. Many typical roasting errors are eliminated by design. This is the level you need before going to the market with real volume — precision, repeatability, and protection against mistakes.
The IMF’s higher air throughput offers superior control of roast curves at all times, especially when most needed late in a roast.
Once we saw IMF's impressive operation, we were confident enough to cancel the rest of our manufacturer visits. Not long after, we placed an order for both our manual RM5 and an automatic RM60. The deciding factors were efficiency, roast quality and support.
Our RM60 provides a consistent, high quality roasting experience that supports our focus for delivering quality coffee to our café partners and home customers.
With the goal of creating new solutions capable of ensuring ever-higher quality standards and cutting-edge technologies, we enthusiastically began sharing ideas and constantly discussing suitable solutions.
The goal is to guarantee consumers high-quality coffee. The coffee roasting process, for example, the result of the ongoing collaboration between the two companies, has now reached extremely high levels in terms of quality and process technology.
I would highly recommend IMF to anyone looking for a quality machine, a roaster that allows consistent repetitive roasts, and a company that is always available to help when an issue does arise, which is not always the case in the manufacturing sector of the coffee industry.
I would absolutely recommend to every roaster to consider IMF. IMF was the only machine that had no limitations when it comes to power or batch capacity. It is nice being able to roast a full batch in under 8 minutes. Being a full convection machine allows specialty roasters to roast few points lighter without risking underdevelopment.
Also, I believe every business today is trying to reduce their carbon footprint. Technology that comes with IMF requires no afterburner and consumes 30% less gas compared to other manufactures.
I knew IMF by a German dealer and found it’s concept very interesting.The most important things in IMF’s roasters are the integration of an afterburner in the roasting machine and the method of heat transfer by air. The first one leads to lower energy consumption and emissions compared to a roaster plus traditional afterburner.
and the ease in which we can adjust the process without chasing a roasting curve. I really like to create the roast profile based on hot air in instead of hot air out. Also the build in afterburner is a big advantage.
We were looking for a IMF 15kg model but we were offered a 30kg used model and chose that one. We are really satisfied with it.
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