ULM (Ultra‑low monomer)
Worker Safety Adhesive Solution
What is ULM
Ultra Low Monomer (ULM) adhesives are polyurethane‑based adhesives engineered to minimize free isocyanate monomers, reducing their content to extremely low levels—typically below 0.1%.
Value Proposition of ULM adhesive
Immediate Food Compliance
ULM technology significantly limits residual isocyanates and minimizes the migration of primary aromatic amines (PAA) through sealing films.
Faster Productivity
ULM technology delivers high performance with rapid bond development and fast curing, enabling slitting within 4–5 hours and pouching or packing within 24–48 hours.
Sustainable Packaging
With greatly reduced isocyanate exposure, ULM adhesives require no special operator training and carry no hazard statements or labeling as potential carcinogens or respiratory sensitizers.
FAQs
Q. Why we need to reduce free‑isocyanates monomer content to low level?
A. Free isocyanate (free isocyanate monomer) easily migrates through sealing films due to their low molecular weight, which forms amines (especially primary aromatic amines “PAA”) through further reactions and contaminates the filling good. Due to toxicological classification, amines are subject to a strict legal migration or maximum limit. Learn more
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How to use ULM
The ULM adhesive range includes one solvent‑based type and one solvent‑free type.
Designed for immediate food‑grade applications, it is suitable for ovenable and microwave packaging, barrier materials, and other high‑performance applications.
| Main component | Hardener | Key features | |
|---|---|---|---|
| Solvent-free | ULM Adhesive | Food safety, Semi-retort 121°C |
Packaging Application with ULM adhesive
Retort pouch
Boil‑in‑bag food
Liquids & Dry food