Collapsible fruit boxes - of expanded polystyrene panels with hinge zones reinforced with polypropylene tape

摘要

Packaging boxes made of moulded panels (of expanded polystyrene) having chamfered ends and 'vee' channels at intervals across the panels to allow the panels to be folded into a box shape, where the hinge lines are reinforced by an integral tape of flexible material, esp. polypropylene. Pref. the tape is perforated or features protrusions to improve its anchorage in the matrix panels. Esp. useful for making fruit boxes which can be folded flat for storage or return for re-use. Construction may include base panels interlocked onto rails mounted on the side walls and may incorporate partition grids. The reinforcing tapes shown have a pair of 'vee' ribs which help to align the tape in the mould with the panel hinge axes.