Tuck Top Auto Bottom Box

The pre-glued bottom relies on a folder-gluer equipped with a crash-lock section. Setting up this machinery takes longer than a standard straight-line carton, so this style is often chosen for mature, repeat orders rather than short trial runs.

A crash-lock bottom is pre-glued at the factory and pops into place instantly when the box is opened. A 1-2-3 snap-lock bottom is unglued and relies on the packer to manually fold and interlock four separate flaps.

Generally, no. Auto-bottom cartons are optimized for hand erection. Fully automated cartoning lines typically use straight-tuck or reverse-tuck formats that machines can handle predictably.

While thin micro-flutes are sometimes used, they increase the risk of the diagonal base creases binding or cracking when the box is popped open. Standard folding boxboard (FBB) is much more reliable for this mechanism.

The interlocked floor is strong enough for most cosmetics, pharmaceuticals, and light retail goods. However, extremely dense or heavy products can cause the center seam to bow outward, which should be checked with a physical sample.

The bottom is pre-glued and does not need tape for assembly. However, the top tuck flap is not tamper-evident or secure enough for parcel shipping on its own. It generally needs either a strong outer shipper or an external seal for courier transit.

The cartons are glued at the factory and delivered knocked down flat. They take up minimal pallet space and are popped open by the packer right before loading.

No. The crash-lock mechanism relies on precise adhesive application. The specific glue assist areas on the base flaps should be left unvarnished and unprinted to ensure a strong bond.