PLA vs Bagasse vs Kraft: Which Eco Food Packaging Should You Buy?

For most UK food businesses the answer breaks down cleanly: kraft for dry and greasy food and bags, bagasse for hot and wet plated meals, and PLA where you need a clear or clear-lined item like a cold cup or a window box. Kraft is the cheapest and easiest to recycle. Bagasse is the sturdiest for hot food and compostable. PLA looks like plastic but is plant-based — with the catch that it only composts in an industrial facility, never your home bin. Which one counts as greenest depends less on the material and more on how it actually gets thrown away.

Infographic coming soonThree-way comparison of kraft, bagasse and PLA on a single card — best-use food type, disposal route, and relative cost — with kraft shown cheapest and PLA flagged industrial-compost-only.

The three materials in plain terms

Kraft is paper board, usually unbleached and brown, sometimes with a thin lining for moisture resistance. It is the familiar noodle box, takeaway carton and paper bag. Because it is fibre, it is widely recyclable where clean, and unlined grades break down readily.

Bagasse is moulded from sugarcane pulp — the fibre left after the juice is pressed out. It makes rigid plates, bowls and clamshells that tolerate heat, oil and moisture better than plain board. It is a by-product of sugar production, which is part of its appeal.

PLA (polylactic acid) is a bioplastic made from plant starch, usually corn. It looks and behaves like conventional clear plastic, which is exactly why it is used for cold cups, deli lids and window boxes where you want to see the food. The catch is in disposal, covered below.

Honest strengths and weaknesses

No material wins outright. Each is a set of trade-offs.

Kraft is cheap, light, insulating and easy to recycle, and it suits dry and greasy food and carrier bags. Its weakness is prolonged contact with very wet or very hot liquid, which softens unlined board — which is why saucy dishes need a lined grade or a tub instead.

Bagasse is rigid, heat-tolerant and naturally resists oil and moisture, making it the strongest fibre choice for hot plated meals and burgers. Its weaknesses are a higher price than plain kraft, and a compostability story that is often oversold — see the disposal reality below.

PLA gives you clarity and a plastic-like feel from a plant-based source, ideal for cold drinks and anything you want to display. Its weaknesses are that it is not home-compostable, it needs industrial composting to break down, and it is easily mistaken for conventional plastic — so it frequently ends up contaminating either the recycling stream or the compost stream.

Comparison table

Cost signals are relative and move with grade and volume — always check current per-unit case pricing before you commit a big order.

The disposal reality nobody prints on the box

This is where marketing and the real world drift apart, so treat it carefully.

"Compostable" almost always means industrially compostable — broken down in a facility that reaches high temperatures, not in a garden compost heap. Bagasse degrades more readily than PLA. But the honest position for both is that they compost reliably in industrial conditions and only slowly, if at all, at home. A minority of items are certified home-compostable. Unless the item explicitly says so, assume industrial.

PLA is the most misunderstood. Because it looks like plastic, customers put it in the recycling, where it is a contaminant, or in the general bin, where it behaves much like plastic in landfill. It composts properly only where an industrial stream exists to take it.

Kraft is the most forgiving: clean, unlined fibre is recyclable through ordinary paper streams that already exist everywhere.

Because collection varies enormously by area, we do not make disposal claims for the products themselves — check gov.uk and your local council for what your specific bins and local facilities actually accept. This is also the practical heart of our compostable food packaging guide for the UK, which goes deeper on the certification labels to look for.

A decision framework by use case

Rather than chasing a single "greenest" material, match the material to the job and the disposal route you realistically have.

Diagram coming soonA decision flow that routes food types to a material — dry or greasy food to kraft, hot wet plated meals to bagasse, cold clear-display items to PLA — with a fallback arrow to recyclable kraft where no industrial composting exists locally.

• Dry or greasy hot food — chips, fried chicken, wraps, boxed mains: choose kraft takeaway boxes. Cheap, insulating, widely recyclable when clean.
• Hot, wet or oily plated meals — burgers, loaded boxes, rice-and-curry plates: choose bagasse plates and clamshells. Rigid and heat-tolerant where kraft would soften.
• Cold drinks and anything you want to display: PLA-lined or clear items make sense, accepting the industrial-composting caveat.
• Carrying the order: paper carrier bags are recyclable fibre and the easy default over plastic.
• If your area has no industrial composting: lean toward recyclable kraft, because a material only delivers its benefit through the disposal route that actually exists near you.

For the background on why bagasse behaves the way it does, see what is bagasse packaging; for the rules shaping single-use choices, see the UK single-use plastics rules.

Buy by use case, not by hype

The greenest packaging is the one that suits the food and matches a disposal route your customers can realistically use. For most kitchens that means kraft as the workhorse, bagasse for hot plated food, and PLA reserved for the clear items that genuinely need it.

Range Pack stocks kraft boxes, bagasse plates and paper carrier bags in case quantities, delivered UK-wide with free delivery over £40 and bulk pricing on the deals page. Compare the kraft takeaway boxes, bagasse plates and carrier bags ranges side by side, and read the compostable food packaging guide for the UK before you commit to a material across your whole menu.