Abstract
The problem of designing a set of rolls exerting a uniform pressure on material passing between them has elicited many different solutions, none quite satisfactory. A new solution, presented here, uses composite rolls having a cigar-shaped inner core and a cylindrical outer shell, the gap between them being filled with a soft elastomer containing approximately 15 percent air bubbles. The core profile is calculated according to equations derived here. The solution produces even roll pressure for any load, without the need for making adjustments to match changing loads. At the same time, the solution is mechanically very simple and reliable.
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