Article isolating packing construction and the like and blank for making the same

Claim 1

AN ARTICLE ISOLATING LINER CONSTRUCTION FOR USE IN A PACKING CONTAINER AND THE LIKE, COMPRISING, A PAIR OF SUBSTANTIALLY IDENTICAL, GENERALLY CHANNEL-SHAPED MEMBERS, EACH OF SAID CHANNEL-SHAPED MEMBERS INCLUDING A FLAT MEDIAL SECTION AND A PAIR OF END SECTIONS DISPOSED ON OPPOSITE SIDES OF AND AT RIGHT ANGLES TO SAID MEDIAL SECTION, EACH OF SAID END SECTIONS BEING PROVIDED WITH A PAIR OF PARALLEL SLOTS EXTENDING NORNALLY TO THE MEDIAL SECTION ASSOCIATED THEREWITH AND FROM AN EDGE OF THE END SECTION, SAID CHANNEL-SHAPED MEMBERS BEING INTERLOCKED AT SAID SLOTS WHEREBY THE SURFACES DEFINING THE BOTTOMS OF THE SLOTS IN EACH END SECTION OF ONE CHANNEL-SHAPED MEMBER AR IN ABUTTING ENGAGEMENT WITH THE SURFACES DEFINING THE BOTTOMS OF RESPECTIBE SLOTS OF THE END PORTIONS OF THE OTHER CHANNEL-SHAPED MEMBERS, SO AS TO DEFINE AN ENCLOSED RECTILINEAR CONTAINER WITH EACH OF SAID END SECTIONS OF ONE MEMBER INTERSECTING BOTH END SECTIONS OF THE OTHER MEMBER SUBSTANTIALLY AT RIGHT ANGLES, THE SPACED EDGE PORTIONS OF EACH END SECTION OF EACH MEMBER PARTIALLY DEFINED BY A RESPECTIVE SLOT AND THE PARALLEL END SECTION EDGE ADJACENT THERETO PROJECTING OUTWARDLY AND NORMALLY TO A RESPECTIVE END SECTION OF THE OTHER CHANNELSHAPED MEMBER WHEN SAID MEMBERS ARE INTERLOCKED.