The flexos and the sheet laminating machines which were used earlier had wash-up systems but often great
scrubbing was required to get the pans clean. As far as the newer systems,
they not only clean better but use less water to wash.
As a result, three- and four-color flexos are quite common.
Where / when to use sheet laminating machines:
Make boxes in industries.
Two corner trays
Four corner trays
Making boxes accessories.
It also reduces dust pollution and evaporation of the solvents.