Certifications / Lab Testing & Patents
Lab Testing & Patents
Numbers matter more than adjectives when you choose a pouch supplier. This page publishes the actual third-party test results from our production samples — overall migration, solvent residues, heavy metals — plus the patents behind our microwave-safe pouch design. Full report copies are shared on request.
Food-contact testing — high-temperature retort pouch (Dec 2024)
Sample: 350 g retort pouch, 150 × 220 mm. Tested by PTC Testing & Certification (Guangdong) Co., Ltd. Report No. PTC24112705201C-CN01, dated 3 December 2024. Commissioned by Huizhou Foraypack Co., Ltd., our production facility.
| Test item (GB 4806.7-2023) | Condition | Limit | Result |
|---|---|---|---|
| Overall migration | 4% acetic acid, 121°C, 40 min | ≤10 mg/dm² | N.D. (<1) |
| Overall migration | 10% ethanol, 121°C, 40 min | ≤10 mg/dm² | N.D. (<1) |
| Overall migration | 95% ethanol, 60°C, 4 h | ≤10 mg/dm² | N.D. (<1) |
| Potassium permanganate consumption | Distilled water, 60°C, 2 h | ≤10 mg/kg | 3.2 |
| Heavy metals (as Pb) | 4% acetic acid, 60°C, 2 h | ≤1 mg/kg | <1 |
| Primary aromatic amines (29 items) | 4% acetic acid, 121°C, 40 min | Not detected | N.D. |
| Colour migration / coconut-oil wipe | — | Negative | Negative |
| Solvent residue (GB/T 10004-2008) | Limit | Result |
|---|---|---|
| Total solvent residues (headspace GC-MS) | <5.0 mg/m² | 1.5 |
| Benzene-series solvents | Not detected | N.D. |
Conclusion: PASS on all items.
EU food-contact testing — retort spout bag (2020)
Sample: retort spout bag, transparent RCPP inner layer. Tested to Regulation (EC) No 1935/2004 and (EU) No 10/2011 per EN 1186 methods. Report No. U05102200921049E, dated 25 September 2020.
| Simulant | Condition | Limit | Result |
|---|---|---|---|
| 10% ethanol | 40°C, 24 h | 10 mg/dm² | N.D. |
| 3% acetic acid | 40°C, 24 h | 10 mg/dm² | N.D. |
| 95% ethanol | 40°C, 24 h | 10 mg/dm² | N.D. |
| Isooctane | 40°C, 48 h | 10 mg/dm² | 9.1 |
| Specific migration of heavy metals | — | — | PASS |
An earlier test (2020) on the same bag structure; kept here for reference alongside the newer 2024 data above.
Granted patents — microwave-safe pouch design
“Microwave anti-scald pouch” — paper-pouch body with a fold-out heat-shield sleeve and C-shaped hand grips so the bag can be carried straight out of the microwave.
Patent No. ZL 2025 2 0158894.0 · Publication CN 223658769 U · granted 12 Dec 2025
Registered industrial design of the same microwave-safe pouch, covering its distinctive fold-out handle construction.
Patent No. ZL 2025 3 0046716.4 · Publication CN 309517999 S · granted 26 Sep 2025
Patent holder: Huizhou Foraypack Co., Ltd. (our production facility). A third utility-model application (“microwave convenience pouch”, application 202522520595.X) has been granted and its certificate is in issue.
Want the full reports?
We share complete test reports (and certificate copies) with serious buyers — just ask.
Related: BRCGS, FDA & ISO certifications · retort bags · microwave-ready bags · food-contact compliance guide
Last updated: October 30, 2026