Every time food is packaged, a layer of material stands between the product and the world. Those materials — pouches, cling film, food containers, even processing equipment — are what the industry calls food contact materials. And they are worlds apart from everyday plastics, differing in how they are regulated, what they are made from and how their safety is verified. As a professional food packaging manufacturer, we unpack this key concept in depth.
The fundamental difference between food contact materials and ordinary plastics
Different regulatory systems
Regulation comes first. In China, food contact materials must satisfy the GB 4806 series and the GB 9685 additive standard; exporters must also clear the destination market’s own rules — the US FDA regime or the EU’s Regulation 10/2011, for example. Ordinary plastics face no such compulsory food safety oversight.
Different raw material standards
The raw materials themselves are restricted. Only food-grade resin is permitted for food contact — recycled or industrial-grade polymer is out of the question. Everyday plastics enjoy no such constraint; manufacturers often turn to cheap recycled or industrial inputs to cut costs, but the safety guarantee disappears with them.
Different migration control
Safety is measured in migration. This term describes how much of the material’s chemical components transfer into food, and regulators set strict caps on both overall and specific migration. Suppliers must back up their claims with migration test data.
Which plastics can be used for food contact?
Which polymers actually qualify? The common food-grade plastics are PE (resin codes 2 and 4), PP (code 5), PET (code 1), PA (nylon) and PS (code 6 — unsuitable for high heat). Even so, only products specifically marked “food grade” may touch food — the same polymer can be sold in both grades. And don’t mistake the recycling mark (numbers 1–7) for a safety certificate: it simply identifies the material type, and must be read together with the product labeling.
How to identify food contact materials
Check the product label
Start with the label. A legitimate food contact product must state “food contact” explicitly and cite an implementing standard such as “GB 4806.7-2023”. Imported items additionally require Chinese-language labeling. A pouch that says “food contact use” and cites GB 4806.7-2023 is declaring compliance with China’s food contact material standards.
Ask for test reports
Then ask for evidence. In B2B buying, demand third-party test reports and examine the decisive indicators: overall migration, potassium permanganate consumption, heavy metal content. Trustworthy food packaging manufacturers test samples on a fixed schedule and share results openly.
Global food contact material regulations at a glance
Regulations differ by region: China enforces the GB 4806 series, the US applies FDA 21 CFR, the EU works under Regulation 10/2011, and Germany adds LFGB certification. Export products must clear the rules of whichever market they enter. We provide cross-border customers with food packaging solutions compliant across multiple national standards — see our Food Export Packaging Certification Guide.
Common misconceptions
Can every plastic pouch hold food?
Not at all. Only pouches marked “for food contact” are qualified. Ordinary plastic pouches can contain industrial-grade additives or recycled resin, both of which may leach harmful substances into food.
Is a transparent plastic pouch necessarily food grade?
Not necessarily. Clarity has nothing to do with food safety — non-food-grade plastics can be perfectly transparent. What matters is labeling and test reports, not how the film looks.
Conclusion
Food contact materials form a critical defense line in food safety, and they truly are different from ordinary plastics — in regulation, raw materials, production process and quality control. Welcome to Contact PurestPack for professional food packaging solutions, and feel free to follow our sister site Huasu Packaging for more B2B packaging information.