Glossary
Gummed paper tape
Definition
A kraft paper tape with a starch adhesive activated by water. It bonds into the box surface for a strong, tamper-evident, fully recyclable seal.
Also known as: Water-activated tape, WAT, Gum tape, Kraft paper tape
Gummed paper tape is a strip of kraft paper coated with a dry starch or animal-based adhesive that becomes sticky when moistened. Applied wet, usually through a dispenser, the adhesive keys into the cardboard fibres and forms a bond that effectively becomes part of the box.
Because the tape fuses with the corrugated surface, it gives a strong, tamper-evident seal: peeling it back damages the box and shows clearly. Reinforced versions with embedded fibreglass threads add extra strength for heavy cartons. Being paper and starch, it is kerbside recyclable along with the box, unlike plastic tape which should be removed first.
The trade-offs are that it needs a water-activated tape dispenser and works best on plain or lightly coated kraft surfaces, as heavily coated or glossy boxes can resist the bond. For plastic-free, recyclable, secure sealing, though, it is the standard premium choice.
What to check
- You will need a water-activated tape dispenser to apply it well.
- Check it bonds to your box surface, as glossy coatings can resist it.
- Choose reinforced tape for heavy cartons needing extra strength.
- Confirm it can be recycled with the box for a plastic-free seal.
- Match tape width to your carton sizes for a single-strip seal.
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Gummed paper tape — FAQs
Is gummed paper tape recyclable with the box?
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