Screening element

摘要

The invention provides a screen which has a screen body ( 12 ) and a plurality of ribs which extend across the screen body. Screening apertures ( 118 ) are defined in the screen body by the ribs. A reinforcing frame ( 124 ) is embedded in the screen body, which frame is made of a first plastics material which has a greater density than a second plastics material from which the screen body ( 12 ) is made. The frame has keying formations formed therein to assist in bonding between the frame and the screen body.