cells see fig7 which when bonded between two kraft paper sheets provides for a highly crush resistant structure due to the evenly spaced perpendicularly disposed rigid walls of each honeycomb cell alternatively any other type of material evenly spaced perpendicularly disposed rigid walls of each honeycomb cell alternatively any other type of material having a lattice structure and or geometrically patterned structure which provides enhanced strength for supporting and protecting heavy loads of produce and which creates air space as a result of that structure can be used the air space formed between the kraft layers creates an enhanced insulating effect in conjunction with the layers of foil laminated to both sides of the kraft paper the significance of the air space is that air is a poor conductor of heat and thus has valuable insulation properties in such packaging applications as evidenced by applicants 39 copending patent application ser no 203 943 filed on jun 8 1988 any reference to aluminum foil panels such as foil panels 7 and 8 in fact represents a panel of honeycomb material fig5 laminated on both sides by aluminum foil bonding may be accomplished by known conventional means such as by gluing or by pressure sensitive masking the kraft paper helps to strengthen the insulating material by placing it perpendicular to the rigid honeycomb core walls thereby ensuring an even distribution of weight over the honeycomb structure in addition to the air pocket created by the honey comb it provides superior structural integrity to such oversized containers as palletized freight as.