Packaging Structure
See how common box styles unfold into a single flat sheet before they're cut and folded. Schematic, not a print-ready dieline. Runs in your browser — no server call, no tracking.
Corrugated Board
Patented in England in 1856 — originally as a liner for tall hats, not packaging. Its structural strength for shipping wasn't recognized until decades later, and it's now the dominant material for transit packaging worldwide.
The Accidental Shipping Box
Credited to Robert Gair, a Brooklyn printer who in the 1890s discovered that a printing press could cut and crease paperboard in the same pass — turning flat sheets into pre-scored blanks that folded into boxes. This single accident created the modern folding-carton industry.
Straight vs. Reverse Tuck
In a straight tuck end (STE), the top and bottom flaps fold in the same rotational direction — the standard for cereal and most retail cartons. A reverse tuck end (RTE) folds them in opposite directions, which shows more front-panel graphics when the box sits flat on a shelf.
Self-Locking Mailers
Mailer boxes (often called RSC — Regular Slotted Container — style) use interlocking flaps instead of glue, so they can be assembled and resealed by hand without tools. Standard for e-commerce shipping precisely because no adhesive or tape is strictly required to close them.