Patent ID: 7934636

Claim:
A single-piece packaging plate foldable to form boxes having different sizes, comprising: an elongated plate portion having first and second short sides, and first to tenth parallel fold lines that are disposed serially from said first to second short sides in a spaced-apart relationship, the distances between said first and second fold lines, between said third and fourth fold lines and between said sixth and eighth fold lines being D 1 , the distances between said second and third fold lines, between said fourth and sixth fold lines, and between said fifth and eighth fold lines being D 2 , D 2 being greater than D 1 ; two side plate portions projecting respectively from two sides of an area between said second and third fold lines of said elongated plate portion, said elongated plate portion and each of said side plate portions having a fold line (A) at a juncture therebetween, each of said side plate portions having a fold line (B) and a fold line (C) that are spaced apart in parallel from said fold line (A), a distance from said fold line (A) to said fold line (B) being D 1 , a distance from said fold line (A) to said fold line (C) being substantially equal to a distance from said second fold line to said first short side of said elongated plate portion and a distance from said third fold line to said fifth fold line; and two wing portions that can be removed optionally from said elongated plate portion, each of said wing portions having a main wing projecting from one side of an area between said sixth and seventh fold lines of said elongated plate portion, said main wing having a length substantially equal to a distance from said seventh fold line to said ninth fold line.