GB 4806.7 vs GB 4806.8 Real Print Shop Boundaries — Plastic Coating vs Paper Coating, 3 Categories of Responsibility

Last December, a client making paper cups came to us: "My cup has a PE coating on the inner layer and paper on the outer layer. Should the print shop issue the report per GB 4806.7 or GB 4806.8?"

Our designer Xiaozhang replied directly: "Just do the plastic report per 4806.7 — PE coating is plastic."

That answer almost got the client rejected in the 2024 QS on-site audit.

The Core Difference Between 4806.7 and 4806.8

GB 4806.7-2016 "National Food Safety Standard — Plastic Materials and Products for Food Contact" and GB 4806.8-2016 "National Food Safety Standard — Paper and Paperboard Materials and Products for Food Contact" — these two standards target different "food contact layers."

4806.7 governs "plastic" as the food contact layer. 4806.8 governs "paper/paperboard" as the food contact layer. The key to determining which standard applies is not "what material is the entire package made of," but "what is the layer directly contacting food."

The paper cup client's case: the inner layer directly contacting the beverage is PE coating (plastic), and the outer layer is paper. Per the 4806 series standard logic, the PE layer test report should be issued per 4806.7, and the paper layer must meet the basic requirements of 4806.8 (if the paper layer is directly contacting food, a separate report per 4806.8 is required).

This answer isn't wrong, but it misses one step: is the client's paper cup for "cold drinks or hot drinks"? If it's for hot drinks (>90℃), the migration of harmful substances potentially released by the PE coating increases, requiring additional "overall specific migration" testing. That's the point auditors flag.

3 Questions Print Shops Are Often Asked Incorrectly

Question 1: "My package has both plastic and paper — which standard should I test to?"

The print shop's standard answer: "Whichever layer is the food contact layer, test to that layer's main material standard. For composite structures, every layer must comply with the corresponding standard."

Print shops should not "choose" standards for the client — the "standard selection responsibility" for food contact material compliance belongs to the brand owner. The print shop only needs to specify in the contract that "the brand owner has confirmed in writing the applicable national standard number."

Question 2: "Can I use GB 4806.7 in place of GB 4806.8?"

No. The two standards cover two different product categories — "plastic for food contact" and "paper and paperboard for food contact" — with different test items. 4806.7 mainly tests plasticizers, migration, and specific substances (e.g., bisphenol A); 4806.8 mainly tests formaldehyde, heavy metals, fluorescent whitening agents, and other paper-specific items.

Test reports issued under the wrong standard will be judged as "false reports" during market regulator on-site audits or when the brand owner submits products to supermarkets for listing — resulting in retesting at minimum (5,000–15,000 RMB) and product delisting at worst.

Question 3: "Do the inks printed by the print shop need to comply with food contact standards?"

It depends on the ink's "contact mode."

Case 1: Ink is printed on the outer layer of the package, does not directly contact food, and is separated by a barrier layer (aluminum foil, PE film, etc.). In this case the ink follows ordinary industrial ink standards and does not need to comply with the 4806 series.

Case 2: Ink is printed on the inner layer of the package, directly contacting food. In this case the ink must comply with GB 4806.10-2016 "National Food Safety Standard — Coatings and Coatings for Food Contact."

Case 3: Ink is printed on the middle layer of a composite structure (e.g., ink on the paper face of paper-plastic-aluminum composite), with aluminum foil or PE film as the inner barrier. This falls under "indirect contact through barrier layer." Although the ink does not directly contact food, it must still comply with the migration requirements of GB 4806.10 due to "migration risk."

2 Documents Print Shops Must Review Before Taking an Order

Document 1: The client's food contact material compliance declaration. The declaration should state the food contact layer material, the applicable national standard number, and whether specific migration testing is required. The print shop should request this stamped by the client.

Document 2: The client's test report. If the client has already conducted food contact testing, the print shop should request a copy of the test report for archiving — this report serves as evidence that "the print shop was aware of product compliance before taking the order." If the client has not conducted testing, the print shop should specify in the contract that "the client warrants the product complies with food contact material regulations."

3 Real Case Studies

Case 1: A print shop in Zhejiang produced packaging for a brand's instant noodles in 2023 — the bag's inner layer was PE coating, outer layer was paper + ink. The client requested an overall compliance report per GB 4806.7. During the market regulator's on-site audit in early 2024, the ink on the package was found to actually be on the "inner direct contact surface" (ink printed on the inner side of the PE film), failing GB 4806.7 migration requirements. The print shop and the brand owner were each fined 20,000 RMB.

Case 2: A print shop in Jiangsu produced outer packaging for a brand's tea can in 2023 — the can's inner layer was food-grade aluminum foil, outer layer was tinplate + ink. The client requested a report per GB 4806.9 (metal). But the print shop actually used "ink printed on the middle layer between the aluminum foil and the tin shell." The market regulator determined the ink to be "indirect contact" and required compliance with GB 4806.10 migration requirements. The client was fined 30,000 RMB, and the print shop fined 10,000 RMB.

Case 3: A print shop in Guangdong produced packaging for a brand's children's biscuits in 2024 — the package structure was "outer paper + middle ink + inner PE." The client's test report was per GB 4806.8 (paper), but the actual food contact layer was PE. During the market regulator's audit, the report was judged inconsistent with reality, and the print shop was deemed to have "failed to exercise due diligence," fined 15,000 RMB.

Print Shop's 3 Categories of Responsibility

Category 1: Responsibility the Print Shop Must Proactively Verify

Information the print shop must proactively verify before taking an order: package structure (which layers), food contact layer material, whether it directly contacts food, and whether there is a barrier layer. For these 4 items, the print shop should formally request the client to provide them. If the client refuses to provide them, the print shop should refuse the order.

Category 2: Responsibility the Print Shop Must Formally Request Confirmation For

Ink type (food-grade vs industrial-grade), which layer the ink is printed on, and the food contact compliance declaration provided by the ink supplier. For these 3 items, the print shop must request formal written confirmation from the client.

Category 3: Responsibility the Print Shop Must Verify Itself

Whether the ink used by the print shop is on the "coatings and coatings for food contact" list (GB 4806.10 Appendix A lists the permitted coatings). If the print shop's ink is not on the list, it should refuse to print food contact packaging.

Print Shop's 4 Lines of Defense

Line of defense 1: Request the "package structure diagram" from the client before taking an order, clarifying the material and position of each layer.

Line of defense 2: Require the client to provide a "food contact material compliance declaration," stating the applicable standard number in the declaration.

Line of defense 3: Establish an internal "food contact ink usage list" at the print shop, only using inks on the list for food contact packaging orders.

Line of defense 4: Include a clause in the contract that "the brand owner warrants the product complies with food contact material regulations and assumes full compliance responsibility."

3 Questions Print Shops Must Ask Clients When Taking Orders

Question 1: "What material is the food contact layer of your product?" If the client cannot answer, it means the client themselves hasn't figured out the compliance boundary, and the print shop should advise the client to seek compliance consulting first.

Question 2: "What is the applicable national standard number for your product?" If the client gives multiple standard numbers (e.g., "both 4806.7 and 4806.8 apply"), the print shop should request written confirmation of the primary standard.

Question 3: "Have you already conducted food contact testing? Can you provide the test report?" If the client answers "not yet" or "plan to do it before launch," the print shop should specify in the contract that "the client warrants completing testing before product launch."

Further Reading

If the client's product is plastic food packaging, the primary standard is GB 4806.7, with the supporting GB 31604 series migration testing methods — see Food Contact Packaging GB 4806 Testing Items in Practice. For metal food packaging, the primary standard is GB 4806.9 — see Metal Packaging vs Plastic Packaging: 3 Categories of Food Safety Comparison for BPA curing risk and free phenol testing in metal cans. For an overview of the entire GB 4806 series 11 standards framework, see GB 4806.1 to 4806.11 Explained in One Article. For mandatory labeling requirements on food packaging (ingredient list / allergens / shelf life, etc.), see 6 Categories of Mandatory Labeling for Food Packaging.