Dry/wet coating

We are a supplier of mixers for both wet and dry product coating. Depending on the customer’s process requirements, we are able to supply units equipped with solid-wall or perforated-wall drums. The latter option, in combination with ventilation systems, allows adequate cooling of the processed product if required. The coating mixers can be adapted for batch or continuous operation. For the first option, the discharge of the finished portion of the batch stored in the drum is achieved by reversing the drum rotation, so that the product is directed through discharge chutes to external receivers. In the case of mixers operating in a continuous system, the flow of the product through the drum, while maintaining an appropriate filling level, is ensured by appropriate selection of the size of the drum inlet and outlet openings, the inclination of the drum axis in relation to the ground and the use of additional elements supporting the movement of the product such as spiral bands, paddles or mixing tunnels. The drive of the coaters can be implemented either through a system of rubberised drive rollers and race rings constituting the drum structure, or through a system of gear wheels. In the latter case, the drum is connected to the mixer support structure via slewing-bearings.

We have experience in designing and supplying coating mixers for sugar-type coatings with an integrated automatic cleaning system. This type of system on the one hand helps to reduce the process downtime and the number of maintenance staff required, and on the other hand, it allows the coating finish to be altered quickly for the next batch of product (e.g. by changing its colour).

We also supply continuous coating machines consisting of a set of drums on a single frame. They carry out the wet coating process followed by dry coating. The design is developed in such a way that the product passes directly from the “wet” drum into the “dry” drum. This type of design saves space and eliminates the need for additional transport systems between the drums. The support structure on which the drums are placed allows them to be automatically pulled apart, improving access to their interior for maintenance and service.