Custom Polypropylene Boxes & Plastic Cases

Trifibre’s polypropylene boxes and cases, otherwise known as poly cases or poly boxes, are ideal for use as plastic transport boxes or storage trunks. Our designs are reusable, stronger and provide a far longer lasting alternative to cardboard boxes, whilst still using recyclable materials! Polypropylene boxes are also a more cost-effective solution compared to flight cases. The construction of this packaging solution has become synonymous with Trifibre over the years, with some of our customers referring to them as a Trifibre Box!

Foam Linings & Inserts

A variety of foam linings or custom CNC foam routed inserts to fit your equipment are available.


Polypropylene cases are relatively lightweight rigid alternatives to birch plywood based flight cases.

Corporate Branding

Using our in house digital and silk screen printing department, plastic cases can be customised with logos to match your corporate branding.


The polypropylene construction of these cases makes them re-usable and recyclable!

No Tooling Costs...

Custom Poly Cases & Storage Trunks

Tough, durable and splash proof, poly cases are constructed from HDPE, and can be custom made to fit your individual specifications. One of the main benefits of purchasing a Trifibre polypropylene box is that they do not require tooling costs, making them a cost-effective casing solution. At Trifibre, our poly cases are constructed with a welded steel metal frame around the top to provide a more rigid and robust structure – an ideal solution for anyone needing a custom storage trunk. A variety of handles, shoulder straps, lid retainers, foam linings, custom made foam inserts and wheels can also be utilised to customise your poly case – the options are endless!

A standard poly case starts out as a flat extruded sheet of HDPE, between 1.3 and 2.0mm thickness. The sheet is then scored and bent around a welded, steel metal frame to give a more rigid structure. All designs can be tailor made to meet your custom storage trunk needs.

While our cases are not a substitute or as hard wearing as our flight cases, they are ideally suited for light and medium duty applications and offer a great cost saving alternative to our custom built flight cases.

Plastic Sample Cases

Trifibre are distributors of a wide variety of plastic cases ideal for carrying samples, presenting products or as recyclable and reusable packaging for premium products.

Our wide range of plastic moulded cases consists of various styles and sizes dependent on your preference from our Italian partners Panaro and Dutch manufacturer Maxado.

As with all of our packaging solutions Trifibre offer a complete customisation service including printing, branding and custom interiors such as cnc routed foam inserts or press outs.

Speak with us...

For more information on our bespoke casing solutions, contact our friendly sales team today on:

0116 232 3166 or email: [email protected]

We’ll only ever use details submitted here in relation to your enquiry, and your information is secure in line with our privacy policy.

Why a Polypropylene Box?

Polypropylene boxes are an ideal and economical solution for promotional packaging, product presentation and sample cases.

Manufactured from environmentally friendly polypropylene, our plastic cases are strong, lightweight and durable. Available in a variety of colours, plastic cases can also be screen-printed with your company’s logo – great for reflecting your corporate image or brand.

Our polypropylene boxes and cases can be further customised by adding a custom foam insert to the interior of the case, ideal for both presentation and protection. Foam is also available in a variety of colours and our CNC routing machine can machine cavities of any shape and size, keeping your products secure and well presented.

Contact the Trifibre team today to find out more.

Happy customers since 1981...

We’re proud of all the work we do, be it large corporate supply, or a simple box for personal storage. Our decades of experience means we’re the best at what we do.

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