Sending bottles, cans, wine, beer and spirits through the post is trickier than you might think, and couriers don't always make it easy.
The good news is that, with the right protective packaging and a few simple packing techniques, shipping liquids becomes much more straightforward. Not only does this help ensure your products arrive safely, but it can also improve the chances of your courier accepting the consignment in the first place.
How to seal a cardboard box using the H-taping method
When it comes to sealing postal boxes, whether you’re using repacking cases, transit packs or any other type of bottle shipping box, it's important to use the correct sealing method every time. For bottle shipments, we recommend the industry-standard H-taping method, which provides extra security and helps keep boxes sealed during transit. After all, one broken bottle can ruin an entire shipment.
- Before placing any bottles or cans into your Pulpsafe shipping boxes, make sure you tape the bottom securely. It may sound obvious, but no one wants precious wine all over the floor. Use the H-taping method shown below and avoid interlocking the box flaps, as this can reduce the overall strength of the box.
- To H-tape a box, simply apply your packaging tape along the centre seam and across both edge seams, creating an "H" shape on the top and bottom of the box. This industry-standard method provides extra strength and helps keep the box securely sealed during transit.
Which tape to use
Not all tape is suitable for the demands of a courier network. Use a pressure-sensitive packing tape that is at least 48mm wide, as this provides enough coverage to bridge the seam and securely adhere to the board on either side. Masking tape, clear office tape and duct tape are all unsuitable, as they can lose adhesion during transit or become caught in automated sorting equipment.
String and decorative overwrap are best avoided for the same reason. Anything that protrudes from the parcel can catch on a conveyor, potentially damaging the packaging or causing the box to open in transit.
Our packaging tape and dispenser includes kraft paper tape printed with a fragile message, which can be recycled along with the box, as well as clear packing tape and reinforced packing tape featuring cross-woven glass filaments for added strength and durability during transit.
Common sealing mistakes
There are three common mistakes worth avoiding.
The first is relying on a single strip of tape down the centre seam. It holds the flaps together but does nothing for the ends, which is where the pressure goes when a box is lifted from the bottom or stacked under weight.
The second is interlocking the flaps rather than taping them. Interlocking feels secure, but it reduces the strength of the box, because the flaps push against each other instead of sitting flat.
The third is not pressing the tape down properly, particularly at the ends. Tape that is only half stuck leaves an exposed sticky edge that picks up dust or catches during handling.
Use a good tape gun or dispenser
The quickest and easiest way to seal a shipping box is to use a handheld packing tape dispenser which you can pick up online from WBC. The dispenser or tape gun applies the tape tightly to the box and helps reduce tape waste.
For more advice on getting bottles through the courier network in one piece, we've written separately about sending wine bottles by post.
If you'd like to discuss your transit packaging needs and find out how you can save on large-volume orders, call our expert team on 020 7737 4040 or email sales@wbc.co.uk.
There's no minimum order and free delivery on orders over £150 ex VAT. Order before 2pm for same day dispatch.
Frequently asked questions about sealing boxes for transit
What is the H-taping method?
The H-taping method covers all three seams on each face of the box. One strip of tape runs along the centre seam where the flaps meet, with additional strips applied across the two edge seams. The finished pattern resembles a capital "H", which is where the method gets its name.
How do I seal a box for courier transit?
Use the H-taping method to seal all three seams on both faces of the box. Choose a packing tape at least 48mm wide rather than office or masking tape, and press the tape down firmly so nothing can catch during transit. A properly sealed box is stronger, more secure and more likely to meet courier requirements for liquid shipments.
