The first question food clients ask: is it compliant?
In food packaging, compliance — not price or tooling — is usually the first gate. Food-contact materials are regulated market by market: FDA in the US, EU 10/2011 and national food-contact rules in Europe, LFGB often requested in Germany, and the GB 4806 series in China. When a client asks for a food-grade report, a blank answer ends the conversation.
Mapping the main regulations and certifications
US FDA: material conformity with the relevant 21 CFR sections, typically evidenced by a supplier declaration of compliance (DoC) and raw-material certificates. EU: EU 10/2011 sets overall and specific migration limits and expects migration test reports, with Germany's LFGB adding sensory and substance-specific checks. China: GB 4806.1 and the material-specific standards, backed by a DoC and test reports. On sustainability, the EU's PPWR, EPR schemes and national plastic taxes are turning recyclability into a hard requirement.
Choosing the material: work backwards from the product
Compliance is the floor; the product scenario drives the choice. PET/PETG offers clarity and strength for visible fresh, bakery and chilled items, with PETG tougher and heat-sealable. PP handles heat and microwaving for prepared foods. PS is low-cost and fast to form for dry goods and short-shelf-life items. Bio-based materials such as PLA/CPLA suit brands promoting sustainability, though heat resistance and brittleness must be assessed. rPET can combine a recycled-content claim with cost control when food-grade requirements are met.
Compliance details in the design
Beyond the material, structure affects both compliance and shelf appeal: cavities must fit the product and its protection level to prevent movement or crushing; the sealing flange needs enough width for reliable heat-sealing; edge and corner treatment affects feel and safety; and if the item will be microwaved or frozen, the temperature range must be confirmed at design time. Also avoid misleading recyclability marks — labels must match the actual material and local collection systems.
Documents a supplier should provide
A review-ready document pack usually includes a declaration of compliance (DoC), food-contact test reports (overall and specific migration, depending on the target market), material safety data sheets (SDS), and any recyclability or bio-based certificates. Make it traceable and precise: which material batch, tested to which standard, valid until when. Many projects stall on expired reports or mismatched test scopes — preparing in advance saves a full round of back-and-forth.
Cost and trends
Eco materials usually cost more than conventional ones, rPET and biodegradable prices move with supply and demand, and brands feel the squeeze too. The pragmatic route is tiering by product line rather than switching everything: keep compliant conventional material for high-volume, cost-sensitive items, and move premium or sustainability-led products to rPET or bio-based stock. As EPR and plastic taxes spread, recyclable design and mono-material structures gain value — planning ahead is far cheaper than redesigning tooling later.
Summary
For food-grade thermoforming packaging, get the compliance baseline solid first, then choose material by product scenario and tier by brand positioning. The paperwork — material declarations, migration tests, recyclability marks — decides as many projects as the forming process does. Jiushun can advise on material, compliance documents and sampling based on your target market and product type.