Food Contact Migration Testing for Molded Pulp Packaging: Technical Reference

Author: 小满 · 燕七 | Date: 2026-07-27

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Quick Reference: Food Contact Regulations by Market

| Market | Regulation | Overall Migration Limit | Specific Tests Required | Key Standard |

|:--|:--|:--|:--|:--|

| EU | (EC) 1935/2004 + (EU) 10/2011 | ≤10 mg/dm² | OML + SML + NIAS | EN 1186 (OML testing) |

| USA | FDA 21 CFR 176.170 | No numerical OML | Compositional compliance, GRAS status | FDA Guidance for Industry |

| Germany | LFGB §30+31 + BfR XXXVI | ≤10 mg/dm² | OML + SML + sensory (taste/odor) | EN 1186 + DIN 10955 |

| China | GB 9685-2016 + GB 4806 series | ≤10 mg/dm² | OML + SML + heavy metals | GB 31604.1 |

| Japan | Food Sanitation Act + JHOSPA | ≤30 μg/mL (simulant) | Material-specific | MHLW Notification No. 370 |

| MERCOSUR | GMC Res. 03/92 + modifications | ≤8 mg/dm² (or 50 mg/kg food) | OML + positive list for additives | — |

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EU Regulation (EU) No 10/2011: The Gold Standard

Food Simulants (Annex III)

| Simulant | Abbreviation | Simulates | Composition |

|:--|:--|:--|:--|

| A | 10% ethanol | Aqueous foods (pH >4.5) | Ethanol 10% v/v in water |

| B | 3% acetic acid | Acidic foods (pH ≤4.5) | Acetic acid 3% w/v in water |

| C | 20% ethanol | Alcoholic foods (≤20% alcohol) | Ethanol 20% v/v in water |

| D1 | 50% ethanol | Alcoholic (>20%), dairy, oil-in-water | Ethanol 50% v/v in water |

| D2 | Vegetable oil / 95% ethanol | Fatty foods | Refined olive oil or 95% ethanol substitute |

Testing Conditions (Annex V)

| Intended Food Contact | Test Temperature | Test Duration | Simulant |

|:--|:--|:--|:--|

| Frozen / refrigerated (no hot fill) | 20°C | 10 days | Per food type |

| Ambient shelf-stable (room temp, >24h) | 40°C | 10 days | Per food type |

| Hot fill (70-100°C, ≤2h), then ambient | 70°C | 2 hours + 40°C / 10 days | Per food type |

| Microwave / oven use (≤150°C) | 100°C or reflux | 2 hours | Per food type + olive oil at 150°C if fatty |

Overall Migration Testing (EN 1186 Series)

Method: Test specimen contacted with food simulant under prescribed time/temperature, simulant evaporated to dryness, residue weighed = total migration.

Calculation: Overall Migration = (M₁ - M₀) / S, where M₁ = residue mass after contact, M₀ = simulant blank residue, S = contact surface area in dm².

Limit: ≤10 mg/dm². For articles with indeterminate surface area (pulp molded containers), the limit is ≤60 mg/kg food simulant.

For molded pulp with water-based barrier coatings: The barrier is the plastic layer under 10/2011. OML testing should use simulant contact with the coated surface only, with testing conditions matched to the intended food contact conditions. A declaration of compliance (DoC) per Article 16 must document: identity of manufacturer, identity of the material/article, date of declaration, confirmation of compliance with 10/2011 and 1935/2004, specifications for the substance(s) with SML, and adequate information on non-listed substances (NIAS).

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FDA 21 CFR 176.170: The US Approach

Unlike the EU's numerical migration limit approach, FDA regulates food contact paper through compositional requirements:

21 CFR 176.170(a)(3): Components of paper and paperboard in contact with aqueous and fatty foods must be either GRAS, prior-sanctioned, or the subject of an effective Food Contact Notification (FCN).

Functional barrier concept: If the molded pulp contains a functional barrier that prevents migration of non-compliant substances into food, those substances are excluded from the composition requirements — provided migration testing demonstrates the barrier is effective.

Testing per FDA Guidance:

| Food Type | Simulant | Test Conditions |

|:--|:--|:--|

| Aqueous (Type I, II, IV-B, VI-B, VII-B) | Distilled water | 8-24h at 21-49°C, per end-use |

| Alcoholic ≤8% (Type VI-A, VII-A) | 8% ethanol | Same |

| Fatty (Type III, IV-A, V, VII-A, IX) | 50% ethanol | 8-24h at 49-66°C |

CFR citation for molded pulp: If barrier-coated, 21 CFR 175.300 (resinous and polymeric coatings) and 21 CFR 176.170 (paper and paperboard) both apply. Uncoated virgin pulp generally qualifies under 21 CFR 176.170 with no additional testing beyond compositional verification.

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LFGB (Germany): The Sensory Requirement

Germany's LFGB adds organoleptic testing that neither EU nor FDA require:

DIN 10955 Sensory Testing:

  • Trained sensory panel (≥8 assessors) evaluates food simulant after contact with packaging
  • Tests: odor transfer (intensity 0-4 scale, ≤2.0 typically acceptable), taste transfer (triangle test vs. blank), appearance change (color, turbidity)
  • Test conditions: 10 days at 40°C (ambient) or 2h at 70°C then 10 days @ 40°C (hot fill)

    • BfR Recommendation XXXVI (Paper and Board for Food Contact):

  • Specific requirements for: pulp source (virgin fiber preferred; recycled allowed with functional barrier), wet-strength agents (polyamidoamine-epichlorohydrin resins must meet limits for epichlorohydrin, DCP, MCPD), retention aids and flocculants (permitted list only), optical brighteners (prohibited for direct food contact paper), dyes and pigments (migration fastness requirement, no primary aromatic amines from azo cleavage).

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    The Complete Testing Suite for Molded Pulp Food Packaging

    | Test | Standard | Limit | Frequency |

    |:--|:--|:--|:--|

    | Overall Migration | EN 1186 / EU 10/2011 Annex V | ≤10 mg/dm² | Initial + annual surveillance |

    | Specific Migration (SMLs) | EN 13130 series | Per substance (Annex I) | Initial + when formula changes |

    | Heavy Metals Migration | EN 1388-1/2 | Pb<0.5, Cd<0.005, Hg<0.005, Cr<0.25 (mg/kg) | Initial + annual |

    | PFAS (Total Fluorine) | EN 14582 / CIC | <10 ppm total F (targeted) | Per batch (for PFAS-free claims) |

    | PCP | EN 645/647 | <0.15 mg/kg | Initial + bi-annual |

    | Primary Aromatic Amines | EN 13130-1 / LC-MS | Not detectable (<0.01 mg/kg) | When azo colorants used |

    | MOSH/MOAH | EN 16995 | MOAH <0.5 mg/kg | Initial + annual (recycled fiber) |

    | Microbiological | ISO 4833, ISO 21527, ISO 6579 | TAMC<1000, TYMC<100 CFU/g; pathogens absent | Per batch |

    | Sensory (LFGB only) | DIN 10955 | Acceptable to trained panel | Initial + when formula changes |

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    *This technical reference covers major food contact regulations applicable to molded pulp packaging as of Q2 2026. Regulatory requirements evolve — always verify with the latest version of each cited standard and regulation. Testing should be conducted by ISO 17025-accredited laboratories.*

    Related reading: PPWR Food Service Packaging Compliance Guide · Food Packaging Safety for B2B Buyers