Patent ID: 8277748

Claim:
A tray composed of moulded plastics material for enabling cleaning of articles located within the tray by fluid flow through the tray, comprising: a tray base, the tray base having perforations provided over substantially the entire area where the articles are in use located and through which the cleaning fluid can flow, a plurality of side portions being located around the perimeter of the tray base, the perforations in the tray base being provided over substantially the entire surface area out to the perimeter where the side portions are located, so that the articles to be cleaned are located by the side portions entirely within the perimeter of the tray base where the perforations are provided, an open top through which the cleaning fluid can flow, wherein the perforations in the tray base are defined by perforation walls, each of the walls in vertical cross section having a narrow top, widening in a downwards direction to a maximum width and then narrowing again to a narrow bottom, the maximum width being less than the distance from the top to the bottom, the perforation walls include longitudinal perforation walls extending in a first direction and transverse perforation walls extending in a different second direction so that the longitudinal and transverse perforation walls meet at intersections defining internal corners of the perforations, the internal corners are smoothly rounded so that there are no sharp internal angles formed where the longitudinal and transverse perforation walls meet; the perforation walls have terminal ends which meet and join with the side portions, and a horizontal cross-section through each meeting of the terminal end of a perforation wall with the side portion is generally of T-shape and internal corners of the T-shape are smoothly rounded so that there is no sharp internal angle formed where the perforation wall meets with the side portion.