Packing box construction with external sleeve - has strips fitted with two lugs to hold box inside sleeve

摘要

The packing box (1) is slipped into a sleeve (2) which is opened at one end and extends beyond the length of the packing box. The sleeve has a back plate (3) which extends beyond the box and is fitted with a central hole (3b) to take a hook. The extension piece is fitted with two re-inforcing strips (4) on either side of the box. Each strip is fitted with a lug (5) perpendicular to the strip which locks the box into position in the sleeve.