The unwinder supports the main reel, which is unwound by a direct current motor that is controlled by the system, and which allows a constant supply both in in terms of speed and tension. It has a two-way rotation capability and automatic control of the main reel diameter. They are made of two machine-formed thick sheet metal parts, from which the connection sections for the various functional groups are made. These are held together by tubular spacers.
The unwinder supports the main reel, which is unwound by a direct current motor whose number of revolutions is controlled electronically according to the variations signalled by a jumper. The process is managed by a PLC.
This ensures that the printing unit has a continuous and constant paper roll feed, as well as a perfect tension control.

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