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)ConditionLimitResult
Overall migration4% acetic acid, 121°C, 40 min≤10 mg/dm²N.D. (<1)
Overall migration10% ethanol, 121°C, 40 min≤10 mg/dm²N.D. (<1)
Overall migration95% ethanol, 60°C, 4 h≤10 mg/dm²N.D. (<1)
Potassium permanganate consumptionDistilled water, 60°C, 2 h≤10 mg/kg3.2
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 minNot detectedN.D.
Colour migration / coconut-oil wipe—NegativeNegative
Solvent residue (GB/T 10004-2008)LimitResult
Total solvent residues (headspace GC-MS)<5.0 mg/m²1.5
Benzene-series solventsNot detectedN.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.

SimulantConditionLimitResult
10% ethanol40°C, 24 h10 mg/dm²N.D.
3% acetic acid40°C, 24 h10 mg/dm²N.D.
95% ethanol40°C, 24 h10 mg/dm²N.D.
Isooctane40°C, 48 h10 mg/dm²9.1
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

Utility model patent

“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

Design patent

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