Cake Box China GB4806 Testing Notes
Date：2025-09-02 10:25:45 Classification
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According to China's "National Food Safety Standard - Food Contact Materials and Articles" (GB4806 series), cake boxes, as food contact products, are subject to mandatory testing. Based on historical conversations and recent search results, the following are the GB4806 testing precautions for cake boxes:
I. Pre-Testing Preparation
1. Material Classification and Standard Matching
- Paper Body: GB4806.8-2016 (Paper and Paperboard Materials) applies, with a focus on testing for fluorescent substances, pentachlorophenol residues, and total migration.
- Plastic Accessories (e.g., transparent windows, lids): GB4806.7-2023 (Plastic Materials) applies, with testing for phthalates and formaldehyde migration.
- Inks/Coatings: GB4806.10-2016 (Paints and Coatings) applies, with testing for heavy metals (lead, cadmium) and volatile organic compounds.
- Sealing Strips (if present): GB4806.11-2016 (Rubber Materials) applies, with a focus on nitrosamine migration.
2. Sample Requirements
- Complete finished products (including all components) must be provided, typically in quantities of 2-3.
- If printed, ensure the ink is exposed to food simulant fluid.
II. Key Points in the Testing Process
1. High-Risk Item Focus
| Material | Mandatory Inspection Items
| Paper Body | Fluorescent Brightener, Lead and Cadmium Migration
| Color Printing Ink | Total Heavy Metal Content (Pb+Cd+Hg+Cr⁶⁺)
| Plastic Accessories | Total Migration (4% Acetic Acid Simulant)
| Adhesive | Formaldehyde and Aromatic Amine Migration
2. Assembly Separation Testing
- Multi-material cake boxes (e.g., paper box + plastic window + silicone seal) must be tested separately and the overall package must undergo migration testing.
- Example: The plastic window must be tested separately according to GB4806.7, while the sealing strip must be tested according to GB4806.11.
3. Simulation Condition Setting
- Select a food simulant based on the characteristics of the cake:
- Grease-based cakes → Isooctane or ethanol simulant;
- Non-grease-based cakes → 4% acetic acid or water simulant.
- Test temperature/time must match the actual usage scenario (e.g., refrigerated vs. room temperature storage).
III. Reporting and Compliance Key Points
1. Report Validity
- Must be issued by a CMA/CNAS-accredited laboratory (e.g., Dezewei Testing).
- The report must include:
- A list of component materials;
- Actual migration data and assessment results;
- Laboratory stamp and test reference standards.
2. Labeling and Packaging Requirements
- Qualified products must be labeled "For Food Contact" or with a spoon and chopsticks logo, and indicate the usage conditions (e.g., "Room Temperature Dry Environment Only").
- If plastic components are present, the material type must be indicated (e.g., "PP").
IV. High-Frequency Risks and Mitigation Recommendations
1. Common Non-Conformities
- Paper Boxes: Excessive Fluorescent Brighteners and Heavy Metal Migration from Inks;
- Plastic Lids: Excessive Phthalate Plasticizers (especially PVC);
- Printed Patterns: Residual Benzene Solvents.
2. Cost and Time Optimization
- Prioritize testing high-risk components (such as color printing areas and direct contact surfaces) before inspecting other areas.
- Typical testing cycle is approximately 5-7 working days.
> Appendix: Quick Reference to Operational Procedures
> 1. Disassemble the Cake Box Material → 2. Match the Applicable Standards → 3. Submit a Complete Sample for Inspection → 4. Verify Report Completeness → 5. Validate Labeling
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