Cross Border Polymer Migration Testing Standard Parameters
Cross-border polymer migration compliance requires testing finished articles under verified worst-case simulants, contact times, and surface-to-volume ratios.
Chinese GB 4806
Meaning
National food safety standards regulate the materials and articles intended to come into contact with food in the Chinese market. Known as Chinese GB 4806, this group of standards applies to plastic resins, additives, and finished molded articles. It dictates the permitted substances, specific migration limits, and sensory requirements for packaging materials.
Importers and domestic manufacturers must ensure that their polymer formulations comply with these mandatory hygiene standards before commercial sale.
Regulatory Architecture
The framework is divided into multiple parts that address different material classes and testing methods. Standard nine covers plastic materials, while standard twelve outlines the official methods for migration testing. Each part provides clear rules for testing conditions, including time and temperature combinations.
Compliance Testing
Molded parts undergo migration tests using food simulants that mimic water, acid, alcohol, and fatty foods. Solvents such as ethanol and acetic acid are used to extract substances under controlled conditions. The sensory evaluation ensures that the plastic does not alter the taste or smell of the food.
Documentation Requirement
A declaration of compliance must accompany the material through the supply chain. This document must list the substances subject to restriction and verify that the limits are not exceeded. Possession of this paperwork is required for customs clearance and market entry.