FlowMarket
Where to source packaging materials: FlowMarket is a B2B sourcing network powered by an AI agent. You describe the packaging — format and internal dimensions, board grade or film specification, barrier and sealing requirements, print, annual volume, food-contact or other approvals and any recyclability targets — and the AI agent matches you with verified packaging manufacturers and converters, then requests prices, samples and lead times from every match at once. Getting matched is free for buyers.
Sourcing packaging materials
Packaging is priced per thousand and decided by tooling. Two suppliers quoting the same box can be a long way apart because one already has a die close to your size and the other must cut a new one — which is why the same specification can look cheap or expensive depending on who you ask.
It is also the category where the specification is most often given the wrong way round. Board is bought on strength, not thickness; film on barrier and sealing behaviour, not just microns. Describe what the pack has to survive and the right material follows.
Material families
Corrugated and cartonboard
Corrugated is specified by flute and wall: E and B flutes for retail-ready and lighter packs, C and BC double wall for shipping and heavier contents. Strength is stated as edge crush and bursting strength rather than thickness, and standard FEFCO style codes make a box design unambiguous across suppliers. Folding cartons are a different trade — thinner board, higher print quality, and a cutting die per design.
Flexible films and pouches
Polyethylene, polypropylene, BOPP and PET appear as single films, laminates and increasingly as mono-material structures designed for recycling. Specified by thickness, sealant layer, barrier performance against oxygen and water vapour, and print. Pouches — flat, gusseted or stand-up with a zipper — are made from these films and can be bought pre-made or formed on your own machine from reel stock.
Transit and ancillary
- Stretch & shrink film — pallet stabilisation and multipacks, by thickness and pre-stretch capability.
- Protective packaging — moulded fibre, foam, paper void fill and air cushions.
- Tapes & strapping — carton sealing and load securing, in PP, PET or steel.
- Labels & closures — self-adhesive labels, caps, lids and tamper-evident features.
What to specify when sourcing
These details decide both the price and the lead time:
- Format & dimensions — internal dimensions for boxes, and the FEFCO code if you know it.
- What it contains — product, weight and whether it is fragile, greasy, moist or aromatic.
- Board or film specification — flute and wall with edge crush, or film structure, thickness and sealant.
- Barrier — oxygen and moisture requirements, and the shelf life you need to reach.
- Print — number of colours, process, artwork status, and whether you hold the print tooling.
- Volume — annual quantity and call-off pattern; this drives price more than anything else.
- Approvals — food contact under EC 1935/2004, BfR, direct or indirect contact, pharma requirements.
- Sustainability — recyclability, recycled content, mono-material requirement, FSC or PEFC certification.
- Machine compatibility — reel width and core, or the machine the material must run on.
- Logistics — delivery location, storage constraints and whether you need call-off stock.
Tooling, minimum order quantity and the mono-material question
The first surprise in packaging sourcing is that the unit price is often the smaller number. A new cutting die, a set of print plates or a pouch tool is a one-off cost that has to be spread across the run, so a supplier quoting a slightly higher price per thousand with tooling they already own can be far cheaper overall for a first order. Ask every supplier to break out tooling separately from unit price, and ask whether a stock size close to your dimensions would avoid the tool entirely — adjusting a box by a few millimetres often costs nothing and saves the die. Minimum order quantity works the same way: flexible film in particular carries a substantial MOQ because of print cylinder set-up and run waste, and a quote for 5,000 pouches may simply not exist at the price implied by a quote for 200,000. The second thing to decide early is recyclability. Regulation across the EU is moving firmly toward recyclable-by-design packaging and recycled content, and the practical consequence is a real trade-off: mono-material structures recycle cleanly but usually give less barrier than a multi-layer laminate. State the shelf life you actually need rather than the material you assume, and let suppliers propose the structure that reaches it.