Tri-Mite Boxes

Tri-Mite system

If you’re looking for a cost-effective, reusable, and sustainable alternative to timber cases for your business, Tri-Mite is an excellent option.

Tri-Mite is a form of triple wall corrugated cardboard with comparable strength to timber. Depending on the size and design of your pack, Tri-Mite can typically withstand over 2.5 tonnes of pressure before starting to deform. However, it is considerably lighter and can be machined to have very precise joints.

At GWP Packaging, our designers and in-house manufacturing equipment allow you to source Tri-Mite containers that are stackable, include a range of fittings and inserts, and can even be painted to any RAL colour.

No obligation
Free, expert advice
Competitive pricing

Benefits of Tri Mite boxes

Using Tri Mite boxes provides your business with a range of benefits:

Triple wall construction and taped joints can withstand over 2.5 tonnes of pressure.
Light weight compared to timber minimises shipping costs and aids handling.
Allows for hinged lids, aiding packing and unpacking.
Additional features, including integral handles and fasteners, improve usability.
Optional inserts, including dividers, foam and custom fittings.
Optional paint or acrylic coatings enhance lifespan and add water resistance.
Easy to recycle at the end of its usable life.

A person loading a military grade cardboard box onto a truck

What our customers say...

We had issues with a previous supplier regarding delivery and quality and so looked to GWP to provide better. They supply us with bespoke corrugated packaging for vending and dispensing equipment, protecting high value products. GWP is without a doubt one of our best suppliers.

Martin Stone | Production Manager | Autonumis

We’ve been working with GWP for around eight years. They supply all our packaging and we are absolutely delighted with them. Over time our needs have changed and they always respond swiftly with exceptional service.

Mark Barnett | Operations | The Consortium

Have been working with GWP for around 2 years – always a great service, quick turnaround and very competitive pricing. Thank you for all your help!

Ben Bishop | Director | Lumi Plugin

FAQs

What is Tri-Mite?

Tri-Mite is a form of corrugated cardboard, similar to triple wall (it has three layers of fluting). It is similarly strong and durable whilst remaining light in weight. However, unlike triple-wall corrugated, Tri-Mite can be machined to create 45-degree angles, allowing for very neat folds and joints.

What are taped joints?

Tri-Mite can be cut with 45-degree angles on its edges, allowing the creation of taped joints (i.e. where the various parts of the box or case join together using tape). This construction provides a clean and precise finish, which enhances the appearance of the packs.

Is Tri-Mite a suitable alternative to timber cases?

Tri Mite is an excellent alternative to timber cases. It provides comparable strength, is reusable over many trips, and is considerably lighter than wooden shipping crates.

Is Tri-Mite waterproof?

It is possible to paint Tri-Mite or spray it with an acrylic coating to provide further longevity and resistance to moisture. This option makes it ideal for applications where it may come into contact with water (for example, being unloaded from a vehicle in poor weather or a damp warehouse).

Is Tri-Mite the same as triple wall cardboard?

The primary difference between Tri-Mite and triple-wall cardboard (Triwall) is that Tri-Mite can feature angle cuts and taped joints. In contrast, a triple-wall board is typically converted in a similar manner to a standard corrugated material (single or double wall). Both, however, provide excellent strength and durability.

A person carrying a triple wall taped box in a factory

Why GWP Packaging?

The outside of GWP Packaging's manufacturing site in Cricklade, Wiltshire

35+ years of experience

Having been in business for over 35 years, we have the skills, people, and, crucially, experience to make significant positive changes to your packaging.

UK packaging experts

We have several teams, working individually and collaboratively, each with specialist knowledge of specific packaging types, materials, and applications.

A team of packaging designers working on a customer brief

Competitive advantage

We can make your packaging work harder for your business, reducing costs, improving performance, and helping with your sustainability goals.

A business you can trust

GWP is part of Macfarlane, improving our geographical reach, resources and product range, whilst maintaining our specialist knowledge and approach.

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