

Comav solutions to constantly envolving markets: Equipment for emptying bags
Introduction
The handling of raw materials in bags or sacks is becoming increasingly used by companies, especially in situations where production requirements are highly demanding and daily. Currently, many companies, such as plastic producers, human and pet food producers, and chemical companies, source raw materials in bags. This is due to the various advantages this supply method offers: easy storage, distribution of bags on pallets, and generally low cost compared to other methods.
When there are medium to high capacity silos, it is necessary to have the right technology to fill them with materials, and this is coupled with the companies’ need to automate and optimize their industrial processes, as well as protect operators who perform the opening and emptying of sacks.
Today, there are companies that no longer perform the process of receiving raw materials manually. Comav, specialists in the Raw Material Reception process.
When talking about the semi-automatic or automatic bag opening process, our Partner Comav from Italy, with over 40 years of experience designing, manufacturing, and installing equipment for raw material unloading, guarantees absolute reliability.
Regarding the unloading of raw materials from sacks, Comav offers a diverse range of equipment: from systems that are fed with individual sacks via a conveyor belt or lifter, to systems that can handle an entire pallet of bags and feed the equipment.
Furthermore, within its product range, it offers its own valves and pneumatic transport equipment, ensuring optimal material transport.
Continuing with unloading equipment, Comav offers more than 40 models and versions of these, which vary in capacity, size, applications, and functionality. This diversity of systems allows satisfying any client need, some of the models the Italian company offers include: SVR COMPACT, SVR DEPA, SRV NT, SVR EL, and more.
The systems are suitable for opening sacks containing various materials. Some raw materials they can handle include: plastic granules, PVC powders, carbonates, talc, sugar, flour, coffee and cocoa beans, seeds, among others.
Key Developments by Comav
Technological advances in recent years have forced Comav to design and manufacture its equipment to meet the most stringent ATEX standards.
What is ATEX? The term refers to the presence of an explosive atmosphere in the workplace, due to the presence of flammable gases, vapors, or dust, which, when combined with ignition, causes combustion to spread, resulting in an explosion and flames, putting people at risk. Thanks to its research and engineering development, Comav has introduced its sack-opening equipment with ATEX 20 certification.
Another important development achieved by Comav is the special CIP (Clean in Place) or gull wing (seagull wing) version, which prevents cross-contamination through water washing or compressed air cleaning. This model is primarily aimed at clients who require minimal or no cross-contamination. The manufacturing of these systems complies with Food Contact Materials Regulation EC1935/2004 (Regulation of Materials in Contact with Food).
Thirdly, Comav’s significant technical and technological development for the Plastic Industry is the system for handling empty plastic bags, meaning the client no longer views the bags as waste, but as a potential for generating value.
Why is this development important? Comav's mission and vision is to reduce raw material waste, with a sack emptying coefficient close to 100% and the main goal of maximizing material use, Comav developed a system called Save Money Technology, which integrates into the sack breaker. Its operating principle is: it takes the empty bag, grinds it into small pieces using a mill, and transports the material to the extruder via pneumatic transport; in this way, the materials are fully utilized.
With the installation of the Save Money Technology system, the return on investment (ROI) time is significantly reduced.
Conclusion
In conclusion, we live in a dynamic, changing world with continuous technological advancements; Comav, with over 40 years of experience in the Bulk Handling process and with its 4.0 technologies, guarantees reliability to the Industry. Thanks to its extensive sales network, the Italian company can assist each of its clients in every project phase, providing the best solution for the Raw Material Reception process.