Box with inward folding lid - has sunken carrying handle and box and lid are in one piece

摘要

The box has an integral, inward folding lid. It has a carrying handle, large enough for a hand, which does not protrude over the top of the box thereby allowing easy stacking and interlocking tongue pieces which prevents the box opening unexpectedly. The lid, which can be adapted for any shape of box, has two opposing side (7, 8) which are double folding (4, 5) one of these sides being provided with half the carrying handle (10) and tongue pieces (9) and the other side with again half the carrying handle (25) and a tongue piece (11). When these sides are folded into the box a lid and handle are formed and the tongue plates interlock. The other two opposing sides (2, 3) also fold inwards to provide extra rigidity to the lid.