Abstract: A press roll for treating sheet material such as paper and suitable for use in the calender or press section of a paper machine. The roll includes a robust stationary shaft and a shell coaxially surrounding and spaced from the shaft and rotatable with respect thereto. In the gap between the shaft and shell is a sealing structure which surrounds a pressure zone in this gap to seal off this pressure zone, fluid under pressure being supplied to the zone by way of a duct which extends through the shaft, so that the fluid pressure in the pressure zone can be controlled to control deflection of the roll at its shell.

Abstract: The invention relates to a packaging tray for fruit of the type comprising a plurality of calotte-shaped depressions for fruit arranged in parallel rows and supporting areas between the depressions. The depressions and supporting areas in different trays are arranged such that a depression of an upper tray coincides with a supporting area of the next lower tray in a stack of trays, and the supporting areas are situated at a higher level than the lowermost points of the depressions of the same tray but still at a sufficiently low level to touch the uppermost points of the fruit supported on the next lower tray.