Abstract: The invention concerns a screen panel (100) for use in vibratory screening operations. The screen panel has a rectangular bounding frame (102) and a screening surface (104) within the frame. The screening surface is formed by elongate, generally parallel, flexible screen elements (106) which are of zigzag shape in plan and which span across the frame. The zigzags of adjacent elements are out of phase with one another, and opposing zags (106.3) of adjacent elements are narrowly separated. The configuration is such that adjacent screen elements define diagonally spaced, generally rectangular screen apertures (108). The zags present generally flat, opposing surfaces (106.4).

Abstract: The invention concerns screen panels of the kind used in vibratory screening operations. According to the invention, the screen panels (10) include recycled polyurethane, typically that recovered from worn screen panels. In one particular embodiment in which the panel has an upper, perforated screening section (16.1) for performing a screening action and an operatively lower section (16.2) beneath the screening section, the upper section is of molded, virgin polyurethane and the lower section comprises a reinforcing frame (12) and recycled polyurethane molded about the reinforcing frame. The invention envisages the use of blends of virgin and recycled polyurethane as well as method of manufacturing screen panels and methods of handling worn screen panels.

Abstract: The invention concerns a screen panel (100) for use in vibratory screening operations. The screen panel has a rectangular bounding frame (102) and a screening surface (104) within the frame. The screening surface is formed by elongate, generally parallel, flexible screen elements (106) which are of zigzag shape in plan and which span across the frame. The zigzags of adjacent elements are out of phase with one another, and opposing zags (106.3) of adjacent elements are narrowly separated. The configuration is such that adjacent screen elements define diagonally spaced, generally rectangular screen apertures (108). The zags present generally flat, opposing surfaces (106.4).

Abstract: The invention concerns screen panels of the kind used in vibratory screening operations. According to the invention, the screen panels (10) include recycled polyurethane, typically that recovered from worn screen panels. In one particular embodiment in which the panel has an upper, perforated screening section (16.1) for performing a screening action and an operatively lower section (16.2) beneath the screening section, the upper section is of moulded, virgin polyurethane and the lower section comprises a reinforcing frame (12) and recycled polyurethane moulded about the reinforcing frame. The invention envisages the use of blends of virgin and recycled polyurethane as well as method of manufacturing screen panels and methods of handling worn screen panels.