Abstract: A pallet of moulded construction comprising a load-carrying surface supported by underlying support structure configured to permit the insertion of the tines of the fork-lift, the load-carrying surface being reinforced at its underside by a cellular reinforcing structure comprising cells the axes of which extend perpendiculary to the load-carrying surface.

Abstract: A system for injection moulding of large plastics components in a single shot comprises an extruder and an accumulator fed from the extruder The accumulator leads into the mould (14) via a mould valve (12) opive, when closed, to close the mould cavity substantially at the mould surface and also to close an outlet (20a) from the accumulator. The valve passage of the mould valve is of relatively large cross-section, typically several centimetres or more which facilitates injection at relatively low pressures and also facilitates passage of stones and other particulate matter which may be present if the extrudate is composed of post-consumer recycled plastics.

Abstract: A pallet having a load-carrying surface (2) constructed of a substantially flat impervious material having a multiplicity of upstanding projections to prevent slippage on the surface while permitting cleaning of the surface. A ground-engaging part (8) of the pallet has at its underside an array of apertures so configured that when two like pallets are arranged in stacked configuration the projections on the load-carrying surface of a lower one of the pallets will engage within the apertures in the ground-engaging part of the upper of the two pallets to prevent slippage of the upper pallet relative to the lower pallet. Preferably, the ground engaging part of the pallet includes an array of substantially parallel reinforcing ribs (10) and the apertures are defined between adjacent ribs.