Reinforced folded blank carton

Claim 1

A FOLDED BLANK TYPE CARTON COMPRISING A PLURALITY OF EDGE-JOINED PANELS DEFINING CIRCUMFERENTIALLY CONTINUOUS WALL PORTIONS OF SAID CARTON; A BOTTOM PANEL JOINED TO ONE OF SAID EDGE-JOINED PANELS AND HAVING UPWARDLY DISPOSED INTEGRAL EXTENSION PANELS AT OPPOSITE EDGES THEREOF AND FORMING, WITH AN OPPOSED PAIR OF SAID EDGE-JOINED PANELS, LAMINATED WALL PORTIONS; A SECOND BOTTOM PANEL INTEGRALLY JOINED TO ANOTHER ONE OF SAID EDGE-JOINED PANELS AND OVELYING SAID FIRST-MENTIONED BOTTOM PANEL; ADDITIONAL LAMINATING PANEL INTEGRALLY JOINED TO THE UPPER MARGINS OF SAID OPPOSED PAIR OF EDGE-JOINED PANELS AND FOLDABLE DOWNWARDLY OVER THE UPPER EDGES OF SAID EXTENSION PANELS SO AS TO ADD THIRD PLIES TO SAID LAMINATED WALL PORTIONS, SAID ADDITIONAL LAMINATING PANELS BEING FOLDABLE TO THE INSIDE OF SAID CARTON AND BEING WIDER ADJACENT THEIR LOWER EDGES TO FACILITATE INFOLDING THEREOF AND TO PROVIDED BINDING FRICTIONAL ENGAGEMENT WITH ADJACENT WALL AREAS WHERE MOST NEEDED AND MOST EFFECTIVE; A PAIR OF CLOSURE PANELS INTEGRALLY JOINED ALONG SCORED HINGE FOLD LINES TO THE UPPER EDGES OF AN OPPOSED PAIR OF SAID EDGE-JOINED PANELS, SAID CLOSURE PANELS HAVING THEIR FREE EDGES REVERSELY BENT UPON AND ANCHORED TO THEMSELVES TO DEFINE EDGE-RIGIDFYING BEAD-LIKE TUBULAR PORTIONS, THERE BEING ALIGNED APERTURES IN THE UPPER PORTIONS OF THE PANELS OF SAID LAMINATED WALL PORTIONS FOR PROVIDING WIDE-SUR FACED HAND GRIPS AND TEAR-RESISTING HANDLES FOR SAID CARTON, ONE OF THE PANELS OF EACH OF SAID LAMINATED WALL PORTIONS, OTHER THAN SAID EXTENSION PANEL, HAVING THE HANDLE OPENING THEREIN FORMED BY A SHALLOW U-SHAPED SLIT DEFINING A GRIP FORMING TONGUE BENDABLE THROUGH AND UNDER THE UPPER MARGINS OF SAID ALIGNED APERTURES; SAID THREE PLY LAMINATED WALL PORTIONS GREATLY INCREASING THE STRENGTH OF SAID CARTON AGAINST DEFORMATION BY STACKING OR OTHER FORCES; RELATIVELY RIGID INVERTED U-SHAPED CHANNEL MEMBERS CAPPING THE UPPER MARGINS OF SAID EXTENSION PANELS FOR INCREASING THE RESISTANCE OF SAID LAMINATED WALL PORTIONS AGAINST DEFORMATION BY STACKING OR OTHER FORCES AND FOR INCREASING THE TEAR RESISTANCE OF THE HANDLE PORTIONS OF SAID LAMINATED WALL PORTIONS.