To properly seal a package with water-activated tape, you need to apply moisture to activate the adhesive, press it firmly onto the box, and allow it to bond. Unlike standard packing tape, which sits on the surface, this tape fuses with the cardboard, creating a tamper-proof seal that strengthens the box itself.
Whether you’re sealing shipping boxes by hand or using a tape dispenser, applying this tape the right way ensures secure packaging that holds up through rough handling.
Lets walk you through how to use water-activated paper tape step by step for the best results.
Step 1: Gather Your Supplies
Before applying the tape, make sure you have the right shipping supplies on hand:
✔ Water-activated tape – Choose standard or reinforced tape for added strength.
✔ Tape dispenser – A manual or electronic dispenser ensures consistent application.
✔ Clean, dry boxes – For the best adhesion, use kraft paper tape (water activated) on dust-free, dry surfaces.
✔ Cutting tool – If using tape manually, scissors or a sharp blade help create clean edges.
Once your materials are ready, you can start the carton sealing process.
Step 2: Activate the Adhesive
The adhesive on water-activated paper tape is dry until moistened. There are two ways to activate it:
- Using a tape dispenser: Most water-activated tape dispensers automatically apply the right amount of water as the tape is dispensed, making the process faster and more efficient.
- Manual application: If you don’t have a dispenser, a sponge or damp cloth can be used to wet the adhesive side evenly. Avoid over-wetting, as too much water can weaken the adhesive strength.
Once the adhesive is activated, you’re ready to apply the tape to the box.
Step 3: Apply the Tape to the Box
For secure packaging, follow these steps when applying the tape:
- Position the box flaps – Ensure the flaps of the box are properly closed and aligned.
- Place the tape – Lay the water-activated tape over the center seam of the box, covering the full length.
- Press firmly – Use your hand or a pressure tool to smooth the tape onto the cardboard, ensuring full contact.
If additional reinforcement is needed, apply a second strip of reinforced tape across the seam.
Step 4: Allow the Tape to Bond
Once applied, the tape needs a few seconds to dry and fully adhere to the box. As it dries, the adhesive integrates with the fibers of the cardboard, forming a tamper-proof seal that is impossible to remove without damaging the package.
Step 5: Reinforce as Needed
For heavy-duty shipping, consider adding extra layers of tape in high-stress areas:
✔ H-shaped sealing – Apply one strip across the center and two shorter strips on the side seams for extra strength.
✔ Double-layering – For heavier boxes, apply two overlapping layers of kraft paper tape (water activated).
Proper reinforcement ensures packages remain sealed through rough handling during transit.
Best Practices for Using Water-Activated Tape
- Store tape in a dry area – Excess humidity can weaken water-activated paper tape before use.
- Use a dispenser for efficiency – A tape dispenser provides even moisture and speeds up the application process.
- Apply firm pressure – Pressing the tape down ensures strong adhesion and prevents peeling.
- Choose the right type of tape – Standard tape works for most boxes, but reinforced tape is best for heavy-duty shipping.
The Best Way to Seal Your Packages
Using water-activated tape the right way ensures secure packaging with a strong, tamper-proof seal. Whether sealing boxes manually or with a tape dispenser, proper application helps prevent damage, improve shipping security, and create a professional look.
For businesses looking to improve their carton sealing, switching to kraft paper tape (water activated) provides better strength, durability, and branding potential.
Get high-quality water-activated tape for your shipping needs today!
Also, we wrote this article on what is water activated tape. We go into the details of what it is, the types and why to use it over traditional packaging tape.
How to Use Water-Activated FAQs
The adhesive is activated by moisture. You can use a tape dispenser that automatically wets the tape or apply water manually with a sponge.
Yes, but a dispenser makes the process easier. If applying manually, wet the adhesive side with a damp sponge or cloth before placing it on the box.
It bonds instantly, but full adhesion takes a few seconds as the tape integrates with the cardboard.
Yes. Unlike regular packaging tapes, this tape fuses with the box, creating a stronger hold that cannot be peeled off and reapplied.
For heavy-duty shipping, reinforced tape with fiberglass strands provides extra strength and durability.