BOPP Tape Widths Explained: 12mm to 72mm — What Each Size Is Actually For

Micron gets most of the attention, but tape width is just as important — and the wrong width either wastes material or leaves your seal under-supported. It's also worth knowing that BOPP tape comes in a much wider range than most buyers realize.

The full width range — and what each band is actually for

BOPP tape is technically available from 9mm up to 96mm, but most of that range is niche. In real trading volume, four widths cover almost everything: 24mm, 48mm, 60mm, and 72mm — and among those four, 48mm is by far the highest-volume width, with the other three making up a much smaller share between them. Widths outside this set (12mm, 18mm, 36mm, 96mm) exist and are stocked by some suppliers, but see comparatively little real demand.

24mm — the narrow, non-sealing width Not used for sealing a carton's main flap. Typical uses:

• Bundling smaller items together
• Labeling or colour-tagging fragile or export-bound parcels
• Sealing small poly bags or gift kits
• Stationery and light office/retail use
• Grouping product variations or repacked items in fulfilment operations

If your question is "how do I seal this carton shut," 24mm usually isn't the right tool — it's for adjacent tasks around the main packing process, not the seal itself.

48mm — the dominant width, by a wide margin This is the standard, overwhelmingly most-used width for actually sealing cartons — covering the large majority of small-to-medium cartons across retail, ecommerce, and general B2B. If you're unsure what width you need for sealing, 48mm is almost always the right starting point, and it's what most buyers should default to unless there's a specific reason to move up.

60mm — a lower-volume middle option Sometimes used as a compatibility choice for certain hand dispensers or tape guns, or as a step up from 48mm without going all the way to 72mm. Real demand for 60mm is much lower than for 48mm.

72mm — the step up for larger or weaker cartons Used when a carton's flap is noticeably longer or the board itself is weaker (rough or lower-quality corrugate) and needs extra seam support across a wider strip. Like 60mm, it's a real and regularly-stocked width, but nowhere near 48mm's volume.

How to actually decide between 48mm and 72mm — there's no fixed size cutoff

Unlike micron (which maps fairly cleanly to weight), sealing width doesn't have a single industry-standard size threshold — no universal "if your carton is over X cm, use 72mm" rule exists. It's a judgment call combining three things together, not one number:

1. Flap length — a longer flap has more unsupported seam for the tape to bridge; a longer flap is the strongest single signal to consider 72mm.
2. Board quality — rough, recycled, or lower-quality corrugate benefits more from the wider seam support, even on a moderately-sized carton.
3. Overall carton size and weight — larger, heavier cartons naturally combine with longer flaps, reinforcing the case for 72mm.

A practical way to judge it: if 48mm tape looks like it barely spans the flap with little margin on either side, or the carton is large enough that you'd naturally reach for H-taping anyway (see Common Sealing Mistakes), that's a reasonable signal to move to 72mm rather than trying to compensate with extra strips of 48mm.

How width interacts with taping pattern

Width alone doesn't determine seal strength — the taping pattern matters just as much:

• Single-strip taping (one strip along the top seam) — adequate for light cartons under roughly 5kg with standard handling.
• H-taping (top seam plus both side edges reinforced) — recommended for anything heavier, export-bound, or handled through multiple transit legs. See the Common Tape Sealing Mistakes guide for exactly how this pattern works and why it matters more than most people expect.

A 72mm tape used with only single-strip taping on a heavy carton often performs worse than 48mm tape properly applied with H-taping — the pattern matters more than the width.

Quick summary

Not sure what your specific cartons need? Talk to PackGPT with your carton weight and shipping conditions.