Four- roll technology has been around almost since the turn of the century: however, it was impractical, as the improved production did not justify the costs.™With the advances in Fluid Technology this has changed dramatically. It is now possible to buy a four-roll machine for only about 20% more than a three-roll double pinch machine.Is this an important development to plate roll users? To answer this question, let's briefly review the functions of the single initial pinch roll, double pinch…See More