Patent ID: 8087570

Claim:
A multi-ply blank for forming a carton, the multi-ply blank comprising: a primary blank and a first reinforcing blank; the primary blank including: a first panel connected to a second panel along a first fold line; the second panel connected to a third panel along a second fold line; the third panel connected to a fourth panel along a third fold line; a first end flap connected to the first panel along a first transverse fold line; the first transverse fold line being transverse to the first fold line; a first corner feature disposed along the first transverse fold line, so that the first corner feature is positioned between the first panel and the first end flap, wherein the first corner feature interrupts the first transverse fold line so that the first corner feature is positioned between first and second portions of the first transverse fold line, and the first corner feature separates the first portion of the first transverse fold line from the second portion of the first transverse fold line; the first reinforcing blank being attached to the primary blank; and the first reinforcing blank including a reinforcing corner feature at least partially superposed with the first corner feature of the primary blank.