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CRC

Cell Rotary Conditioner

New generation automated drying system

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Independent cell air conditioning system

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Innovative air flow distribution

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Optimization of the distance between the laether

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Adjustable tension of the treated leather

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automated frames

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Drying has a new quality standard

Fratelli Carlessi has developed a new generation drying and conditioning system, to meet the needs related to new leather processing technologies in terms of product quality, productivity, the flexibility of use and reduction in consumption.

Modern drying and conditioning processes require better control of drying parameters such as humidity, temperature and air distribution, but also accurate control of the tension of the fibres in the conditioning process, to avoid damage such as blowholes. grain and losses of useful leather surface.

The CRC rack dryer is the evolution of a traditional drying and conditioning system and introduces several new solutions covered by international patents.

Independent cell drying and conditioning system

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The CRC drying tunnel is divided into cells: in this configuration each module works independently, controlled by the recipe set on the leather contained inside.

In this way the module, as the frames advance, self-regulates its own temperature, humidity and ventilation, in a totally independent way from the other modules and keeping the processes separate between the different batches of leather.

 

In this way it is possible to avoid differences in quality and contamination between different lots and lots of leather: in addition, each cell has its own unit for tensioning and detensioning the hides.

Redesigned and more efficient airflow distribution

The heated airflow passes through the leathers from the bottom upwards, allowing uniform drying, as humidity tends to accumulate due to the effect of gravity in the lower part.

 

The adoption of heat pumps in the CRC system helps to significantly accelerate the drying of the hides, thanks to the use of air with low humidity content which allows to obtain low drying temperatures and lower energy consumption.

Through the innovative cross-flow ventilation system, the air reaches the central area of the leathers more easily than a traditional ventilation system.

 

This drying method avoids the formation of darker areas along the edges of the leathers or colour changes.

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Optimal drying thanks to the optimized distance between the leather

The optimized distance between the individual frames improves the drying time of the treated leathers.

 

This allows the correct passage of the cross ventilation flows, keeping the system compact in size. 

Adjustable leather tension for maximum quality

Through a patented system, the expansion units of each cell can regulate both the extension and the relaxation of the leather.

 

The result is a much more accurate control of fibre stresswhich avoids damage such as flower blowing.

 

Thanks to their special construction, the frames can reach a different degree of extension between the head and the breech of the hide.

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Automation in the rotation of the frames and in the work stations

The automatic rotation system of the frames can further accelerate the work of the operators in the phases of stapling and removal of the hides from the rotating structures, also increasing safety.

 

Furthermore, with the use of the software program integrated into the CRC drying system, complete management of the parameters of the individual cells and frame by frame is obtained, for the entire duration of the work cycle.

Work cycles managed via display and Industry 4.0

The CRC production supervision system is structured with a PLC integrated into a 21 ” colour industrial computer, which can be connected to the local LAN network via Ethernet connection for remote assistance with a view to Industry 4.0.

 

Drying recipes and cycles can be set and automatically recalled, any anomalies managed and the drying and conditioning processes can be remotely controlled. 

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CRC

A new standard of leather drying

Interested in learning more about our Cell Rotary Conditioner tanneries dryer ?