How much packing tape per box?
Tape is a small cost per box, but it runs out at the worst times. Knowing how much each box uses helps you order the right amount and seal boxes properly.
Single strip method
One strip runs along the center seam where the flaps meet, continuing a few inches down each end panel. On a 16 × 12 × 12 inch box with 2½ inches of overhang at each end, each strip is 16 + 5 = 21 inches. Top and bottom together use 42 inches, or 3½ feet.
H-tape method
H-taping adds a strip across each edge seam on the top and bottom, so all the openings are sealed. On the same box, each edge strip is 12 + 5 = 17 inches. Four edge strips add 68 inches, for 110 inches (about 9 feet) per box.
H-taping is recommended for heavy boxes, boxes that will be stacked, and shipments where carriers or customers specify it. It keeps corners from popping and dust out.
How many rolls?
A standard roll of 48 mm tape is 110 yards, or 3,960 inches. With a single strip at 42 inches per box, that's about 94 boxes per roll. With H-tape at 110 inches, about 36 boxes.
Choosing tape
- Width: 48 mm (2 inch) for most boxes; 72 mm (3 inch) for heavy or double-wall cartons.
- Thickness: about 1.6 to 2 mil for light boxes, 2.5 to 3 mil for heavier ones.
- Type: acrylic is clear and handles temperature changes well; hot melt grips fast and strong; water-activated paper tape bonds into the board and is tamper-evident.
What not to use
Masking tape, duct tape, cellophane tape and string aren't designed for sealing boxes and may not hold through a parcel network. Some carriers won't accept boxes sealed with them.