Importing disposable food packaging: the buyer's checklist

Disposable food packaging is a simple product with a complicated purchase. The container is cheap, the freight is not, and the cost of a wrong lid or a weak carton lands on you six weeks later. This checklist is the sequence we walk through with importers before a first order — and the arithmetic you should be able to reproduce from any quotation before you pay a deposit.

1. Specifications: the sheet that prevents most disputes

A specification sheet is not marketing material. It is the document you measure production against. It should carry all of the following:

• Item number and the description you will use on your own purchase orders
• Material and grade — PP, PET, PS, kraft or white board, and the lining where paperboard is used
• Capacity in millilitres and ounces, plus the filled-to level that capacity refers to
• Overall dimensions: length × width × height, or top and bottom diameter for round parts
• Unit weight in grams, and the tolerance you will accept
• Wall type, number of compartments, and lid interface
• The lid item number, its material and its own gram weight
• Colour reference, with a Pantone number or a physical chip
• Print: area, number of colours, and the approved artwork revision
• Temperature use, and whether the pack is intended for microwave reheating

If two of these are missing, you are not buying a product — you are buying an impression of one.

2. Weight, wall and price

Grams per piece is the single number that ties price to performance. Our 300 ml round container weighs 13.5 g; the 750 ml rectangular container weighs 35.5 g; the 3,550 ml catering bowl weighs 30.5 g. Ask what the gram weight is, ask whether it is a minimum or an average, and measure ten pieces from the pre-shipment sample. A supplier who cannot answer has not costed the product properly, and the difference will show up as either a weak wall or a surprise in your freight bill.

3. Packing: what the carton has to tell you

• Pieces per carton — and whether the lids are in the same carton or a separate one
• Inner bagging: bag or no bag, and the bag thickness
• Carton dimensions in centimetres and gross weight in kilograms
• Carton grade and whether the goods are nested loose or stacked in fixed counts
• Carton marking: your item code, description, quantity, and any barcode your warehouse scans
• Pallet or loose loading, pallet height, and whether the pallets are wood or plastic

Carton marking is the cheapest thing to get right and the most annoying to fix. Wrong marks mean repacking or relabelling in your own warehouse, at your own labour rate.

4. Carton volume and 40HQ loading

Container space is your second-largest cost after the goods. The arithmetic is simple, and you should run it yourself on every quotation.

CBM per carton = length × width × height in centimetres ÷ 1,000,000.

Take a real line from our catalogue: the 750 ml rectangular container, item HJ138D. The carton measures 54.5 × 18 × 28.8 cm, which is 0.0282 CBM. It holds 150 pieces at 35.5 g each, and the catalogue lists 2,407 cartons in a 40HQ.

• 2,407 cartons × 0.0282 CBM = 67.9 CBM of carton volume
• 2,407 cartons × 150 pieces = 361,050 pieces
• 361,050 pieces × 35.5 g = about 12.8 tonnes of product

Two conclusions follow. First, a 40HQ is nominally about 76 m³ inside, and this load uses roughly 68 m³ — the rest is stowage loss, pallets and door space, so treat 68 m³ as a realistic planning ceiling for cartoned goods. Second, at 12.8 tonnes of product the container is nowhere near its payload limit, which is typically 26–28 tonnes. Light disposable packaging is almost always volume-limited, which is why a size that packs two hundred to a carton can be a better landed cost than one that packs five hundred, even at a higher unit price.

Run the same three multiplications on the supplier's cartons-per-container figure. If the quoted cartons per 40HQ imply much more than 68 m³, ask what is being assumed — mixed loading, a different carton, or an optimistic spreadsheet.

5. Lids: the SKU maths everyone forgets

Lids rarely pack in the same ratio as bodies. In our range the 120 mm PP lid packs 500 to a carton at 5.1 g, while the 750 ml body packs 150 to a carton. Buy 3,000 bodies and you need 3,000 lids: that is 20 body cartons and 6 lid cartons. Get the ratio wrong and you either pay for a second shipment of lids or sit on a pallet of bodies you cannot sell.

Two habits fix this. Quote bodies and lids as a pair, with both carton counts on one page. And check that the lid item number in the purchase order is the one that was fitted to the approved sample — a 145 mm lid and a 150 mm lid look similar in a photograph and behave very differently on a bowl.

6. Documentation

The shipping file for a packaging order normally contains a commercial invoice, a packing list and the bill of lading, plus origin paperwork where your destination has a trade agreement — usually issued through a Chamber of Commerce. Wooden pallets carry the international wood-packaging treatment mark. Where your market requires independent laboratory reports for food-contact parameters, ask for third-party testing to be arranged against your specification and keep the reports with the shipping file.

Check that the invoice, the packing list and the bill of lading describe the same goods in the same units. Mismatched descriptions are the most common cause of a customs delay on a first shipment.

7. Sample approval

• Measure ten pieces against the specification, not one
• Fit and remove the lid twenty times and check the seal after the twentieth
• Fill with the real product at the real serving temperature
• Leak test on a tilted tray, drop test from normal carrying height
• Microwave test if the pack is sold for reheating
• Check the print against the artwork in shop lighting, not on a monitor
• Sign the specification sheet and keep one sealed reference sample

The sealed sample is your evidence. Without it, every later conversation about a faulty batch becomes a matter of opinion.

8. Inspection and quality control

Agree the inspection plan inside the purchase order: sampling size, the defects that count as critical, major and minor, and who pays for a re-inspection. Ask for in-line records for unit weight, dimensions, lid fit, leak and print register, and for loading photographs before the container doors close. Third-party inspection can be commissioned at your cost on any order, and it is money well spent on a first container of a new part.

9. Price validity and resin movement

Plastic prices move with the resin market, and paper with pulp. Ask for a quotation validity window in writing and for the mechanism if the order is placed after it expires. A supplier who will not state a validity period is usually planning to re-price you after the deposit — and a price that looks 10% cheaper than everyone else is often a price that has not yet met the resin bill.

10. Red flags on a first quotation

• No specification sheet, no gram weight, no carton dimensions
• MOQ or lead time that changes after the deposit
• Recyclability or compliance claims with no supporting document and no mention of your market's rules
• Cartons per container that do not survive the CBM calculation
• Samples that cannot be traced to the production tool

First-order timeline at a glance

MOQ, sample and lead-time figures above are typical commercial defaults, not fixed promises — the quotation for your part states the figures that apply.

Work through the ten points once and the second order takes an afternoon. If you want the numbers for a specific size, the carton and CBM data for every item is in our catalogue, and we will confirm the loading plan for your mix in writing before you book.