Burger Box Packaging UK: Food Safety, Grease Resistance and Design Guide
There is a distinction that most UK burger box suppliers deliberately blur, and it costs food businesses real money every month. Grease-resistant means the board slows grease migration. Greaseproof means it blocks it completely. If your burger box is rated grease-resistant and you are running a high-fat burger operation with sauces, double patties, and melted cheese, you may be specifying a box that looks correct and fails in service.
This guide comes from the team at Wabs Print, a London-based packaging supplier that has produced custom burger boxes for UK food businesses since 2008. We supply 3,400 plus UK burger restaurants, from independent gourmet burger joints to multi-site fast food chains, and the technical specification questions we field most often are about grease resistance, ventilation, and how lock-tab construction affects delivery performance. Wabs Print, based in London, supplies custom burger boxes to food businesses across the UK, from independent burger restaurants in Brighton and Leicester to takeaway chains in Southampton and Oxford. By the end of this guide you will know how the clamshell construction works, what COBB rating actually measures, and what it costs per box at your volume. If you want a price now, custom burger boxes UK will get you a quote within 24 hours. Free design support is included on every order, and delivery is free to any UK address.
What Is a Burger Box and How Does the Clamshell Work?
A burger box is a hinged clamshell packaging unit made from E-flute corrugated board, grease-resistant coated on the inner surface, designed to hold a burger securely from kitchen to customer without spills, sogginess, or structural failure. The clamshell design means the lid and base are a single piece of board, connected by a scored hinge at the back that allows the lid to open to 180 degrees, letting the customer eat directly from the box without needing to transfer the burger to a plate.
The lock-tab closure at the front of the box keeps the lid shut during transit by folding a die-cut tab from the lid panel into a slot in the base wall, creating a friction lock that prevents the box from opening under courier handling or the weight of a second box stacked on top. It requires no tape and opens with a single finger press, which matters for the speed of service on a busy shift.
Understanding why the clamshell design dominates UK burger packaging is straightforward once you have seen a flat-wrapped burger survive a 20-minute Deliveroo journey. It does not. The burger shifts, toppings slide, sauce migrates into the bun, and the package opens in the bag. A clamshell with a lock-tab closure prevents all of that for the same reason a box outperforms a wrap for anything that needs to maintain its shape and orientation in transit.
Grease-Resistant vs Greaseproof: The Distinction That Matters
Grease-resistant board slows grease migration. Greaseproof board blocks it completely. They are not the same thing, they are measured differently, and specifying the wrong one for your menu has predictable consequences.
Grease resistance is measured by the COBB test, which measures how many grams of oil a square metre of board absorbs in 60 seconds. A COBB rating of less than 20g per square metre is the food service standard for burger boxes and indicates the board will resist grease penetration under normal service conditions: a single patty burger with standard toppings during a delivery window of up to 30 minutes. All burger boxes we supply carry a COBB rating of less than 20g per square metre.
True greaseproof board uses silicone or fluoropolymer impregnation of the paper fibre itself rather than a surface coating. It is the correct specification for our greaseproof sheets range, used as inner liners or wrapping paper, rather than as the structural board of the box itself.
For most UK burger operations, COBB-rated grease-resistant corrugated board is the correct specification for the box. If your menu runs particularly high-fat burgers, pairing the grease-resistant box with a greaseproof sheet liner gives complete protection at a lower total cost than upgrading the entire box board to greaseproof specification.
| Specification | Grease-Resistant Board | Greaseproof Board |
|---|---|---|
| Measurement | COBB value, g/m² oil absorption in 60 seconds | Near-zero oil absorption through the board |
| Standard for burger boxes | Less than 20g per square metre | Used in inner liners and wrapping sheets |
| Best for | Standard burger menus, all delivery platforms | Very high-fat menus, extended delivery, or as inner liner in combination with standard box |
| Cost | Moderate premium over uncoated board | Higher premium, more common as liner sheets |
Ventilation: Why Steam Kills the Bun Before the Delivery Does
Steam is generated continuously as a hot burger sits in an enclosed box. Without ventilation, that steam condenses on the inside of the lid and drips back onto the bun surface, softening it during the delivery window. Too many ventilation slots and the burger loses temperature too fast.
For most standard UK burger menus, the ventilation pattern on our regular and large boxes provides the correct balance for a 20 to 30 minute delivery window. For delivery operations where average delivery time consistently exceeds 30 minutes, or for very high-moisture toppings, we can adjust the vent pattern at the die tooling stage. Tell us your typical delivery window and menu type when you enquire and we will confirm the appropriate vent specification.
The Six Burger Box Types and What Each One Is For
| Type | Internal Dimensions | Board Weight | Capacity | Price From at 1,000 units | Best For |
|---|---|---|---|---|---|
| Small (slider) | 10cm x 10cm x 7cm | 300gsm E-flute | Up to 400g | £0.10 | Sliders, kids’ burgers, sharing platters |
| Regular | 12cm x 12cm x 8cm | 300gsm E-flute | Up to 600g | £0.12 | Single patty, chicken, standard fast food |
| Large | 14cm x 14cm x 10cm | 350gsm E-flute | Up to 800g | £0.18 | Double patty, loaded gourmet builds |
| XL (stacked) | 16cm x 16cm x 12cm | 400gsm reinforced E-flute | Up to 1,200g | £0.25 | Triple patty, challenge burgers |
| Chicken | 13cm x 13cm x 9cm | 300gsm E-flute with extra vents | Up to 700g | £0.14 | Fried chicken burgers, thick breaded patties |
| Window display | 12 to 14cm options | White card with PET window | Up to 600g | £0.22 | Gourmet restaurants, Instagram appeal |
The most common sizing error we see is a gourmet burger restaurant specifying a regular box for a double-patty loaded build that physically does not close cleanly. The lock-tab cannot engage when the box is overfilled. Always measure your tallest fully assembled burger, including bun crown, before specifying box depth.
Cost and Pricing Guide
All prices below are confirmed from our live burger boxes page and include free UK-wide shipping. Full-colour CMYK printing adds a small increment at the pricing stage.
Burger Box Pricing by Size and Volume
| Size | 1 to 99 units | 100 to 499 units | 500 to 999 units | 1,000 plus units |
|---|---|---|---|---|
| Small slider, 10cm | £0.20 | £0.16 | £0.13 | £0.10 |
| Regular, 12cm | £0.25 | £0.20 | £0.16 | £0.12 |
| Large, 14cm | £0.35 | £0.28 | £0.22 | £0.18 |
| XL stacked, 16cm | £0.45 | £0.36 | £0.29 | £0.25 |
| Chicken, 13cm | £0.28 | £0.22 | £0.18 | £0.14 |
| Window display | £0.40 | £0.32 | £0.26 | £0.22 |
There is no minimum order. Most UK independent burger restaurants start at 500 to 1,000 units for their first branded run. If your artwork is not yet print-ready, our design team will check your file, set it up correctly, or build the design from scratch, at no extra cost. Delivery is free to any UK address on every order.
Pairing your burger box order with greaseproof sheet liners adds roughly £0.04 to £0.08 per box at volume, which for high-fat menus gives complete grease protection at a fraction of the cost of upgrading the entire box board specification.
How to Choose: A Decision Framework for Your Burger Operation
Work through these four questions before specifying a burger box.
- What is your tallest fully assembled burger? Measure it. The internal box depth must exceed this by at least 5mm for the lock-tab to engage correctly.
- What is your delivery model? Collection and dine-in: standard COBB-rated box is adequate. Third-party platforms over 20 minutes: confirm the vent pattern for your menu. Ghost kitchen with very long delivery windows: consider a greaseproof sheet liner inside a standard box. Our pizza box packaging guide covers the same delivery model decision framework for pizza, including the barrier discussion that applies equally to burger boxes with high-moisture toppings.
- Is your menu high-fat enough to need a greaseproof liner? Standard beef burgers with single sauce: COBB-rated box alone is adequate. Loaded smash burgers with multiple cheese slices, bacon, and heavy sauce: add a greaseproof sheet liner.
- Do you want to make a sustainability claim? Kraft is FSC certified and recyclable when clean. Bagasse is compostable. Both cost more than standard white board at the same volume. Under CMA enforcement guidance from April 2025, a sustainability claim requires specific verifiable evidence. Our sustainable food packaging guide covers which specific claims are defensible for food packaging in 2026.
Burger Box Food Safety Compliance
All burger boxes we supply are certified to EN 1935:2004, the European standard for materials and articles intended to come into contact with food, as retained in UK law. A Declaration of Compliance is available with every order on request, which is the document most Environmental Health officers ask for during routine inspections.
The OPRL recycling label for a standard burger box is “Recycle” when clean. A food-contaminated burger box is not recyclable and should go in general waste. Under OPRL guidance and CMA enforcement rules from April 2025, a blanket “100% recyclable” claim on burger boxes without qualification is a legally exposed statement if contamination makes most boxes unrecyclable in practice.
Our EPR Packaging UK guide covers how burger box volume contributes to your Extended Producer Responsibility reporting obligation. This reflects packaging compliance guidance as of June 2026. Always verify current requirements at gov.uk before making compliance decisions for your business.
Burger Box Delivery Across the UK
Drummond’s Burger Co, an independent gourmet burger restaurant in Southampton, came to us after a run of complaints about soggy bun bottoms on their Deliveroo orders despite using a branded burger box from a previous supplier. Their boxes had no confirmed COBB rating and the vent pattern was inadequate for their loaded menu. We moved them to our regular 12cm box with the confirmed COBB less than 20g per square metre rating and an adjusted vent pattern for their high-topping menu. The soggy bun complaints stopped within the first week of the new stock and their Deliveroo average rating stabilised over the following month. They are now on a standing quarterly order.
Wherever your burger operation is based, lead time and pricing stay identical. A gourmet burger restaurant in Cambridge works to the same 7 to 10 working day turnaround as a multi-site chain in York, and delivery is free to any UK address. We receive a regular flow of enquiries from food businesses in Leicester asking whether the same burger box spec works for both dine-in and delivery. It does, with one practical consideration: if you are running both and want to simplify your stock to one SKU, specify for delivery since delivery is the harder environment. Whether you are running a ghost kitchen in Southampton or a gourmet burger joint in Brighton, turnaround and pricing are identical.
FAQ
What is the difference between a grease-resistant and greaseproof burger box?
Grease-resistant board slows grease migration and is rated by COBB value, the grams of oil absorbed per square metre in 60 seconds. A COBB value below 20g per square metre is the food service standard for burger boxes. Greaseproof board blocks grease completely using silicone or fluoropolymer impregnation. For very high-fat menus, a greaseproof sheet liner placed inside a standard COBB-rated box provides complete protection at lower cost than upgrading the full board specification.
What size burger box do I need?
Measure your tallest fully assembled burger including the bun crown. The internal box depth must exceed that by at least 5mm for the lock-tab to close correctly. Regular (12cm x 8cm internal) fits most single-patty burgers. Large (14cm x 10cm) fits double-patty and loaded builds. XL (16cm x 12cm) fits triple-patty and challenge burgers. Always measure your specific build.
Are burger boxes food-safe for direct food contact?
Yes. All burger boxes we supply are certified to EN 1935:2004 for direct food contact, covering the board, print inks, and grease-resistant coating. A Declaration of Compliance is available with every order on request for Environmental Health inspections.
Do you deliver custom burger boxes to Brighton and Southampton?
Yes. Wabs Print delivers custom burger boxes to businesses across the UK, including Brighton, Southampton, Leicester, Oxford, Cambridge, York, and London, with free UK-wide shipping on every order. Standard production is 7 to 10 working days from artwork approval.
What is the minimum order for burger boxes?
No minimum order. Pricing starts from £0.10 per box for small slider boxes at 1,000 plus units and £0.25 per box for regular at 1,000 plus units. Most UK independents start at 500 to 1,000 units for their first branded run.
Why do burger boxes need ventilation slots?
Steam from a hot burger condenses on an unventilated lid and drips back onto the bun, softening it during delivery. Ventilation slots allow steam to escape without excessive heat loss, preventing the soggy bun that is the most common delivery quality complaint for UK burger restaurants.
Can burger boxes be recycled?
A clean burger box is recyclable in UK kerbside paper collections. A burger box with grease, sauce, or food residue is not recyclable and should go in general waste. Actual recyclability depends entirely on whether the customer has eaten everything in it.
Making the Call
Burger box packaging UK decisions start with two measurements: the height of your tallest assembled burger and your delivery window. Match the box depth and vent pattern to those two numbers and the grease resistance, food safety, and print decisions follow logically. A COBB-rated grease-resistant box with the correct vent pattern handles every standard UK burger menu. For very high-fat or long-delivery operations, add a greaseproof sheet liner rather than upgrading the full board specification.
Whether you are running a gourmet burger joint in Brighton, a ghost kitchen in Southampton, or an independent restaurant in Leicester, Wabs Print delivers custom burger boxes across the UK with no minimum order, free UK-wide shipping, free design support on every order, and the same 7 to 10 working day turnaround regardless of volume. If you are ready to get a price, custom burger boxes UK and you will have a quote within 24 hours.
