Corrugated cardboard packaging blank - has base with sides folding to form adjustable height sides locked by base flaps, flaps holding envelope over base window

摘要

A corrugated cardboard packaging blank has a cruciform shape with the package base (s) in the centre of the blank. Two panels (C, D) have multiple fold lines which can be used to form variable height sides with inner flanges lying on the base and upper edge flanges extending inwards towards each other. Two panels (A, B) form the front and back of the package. Two flaps (E) and (F) cut out in the base fit in corresponding slots in the sides to ensure that the sides remain upright. Three flaps (X), (Y) and (Z) cut in the base immobilise an envelope in the package so that an address is visible through a window (L) in the base.