Fast Curing Solvent-Free Polyurethane Laminating Adhesive 100% Solids Food Contact Compliant for Packaging
Product Overview
Weeton 836A/836B is a solvent-free two-component polyurethane adhesive fully compliant with major food contact regulations including REACH (EC 1907/2006), RoHS 2011/65/EU, EU 10/2011, FDA 21 CFR 175.105 and China GB9685. With fast curing, good leveling and strong versatility, it is a trusted choice for food-grade flexible packaging lamination.
Key Features
- Full food contact regulatory compliance (REACH, RoHS, EU 10/2011, FDA, GB9685)
- 100% solids solvent-free with fast curing
- Good leveling and coating performance
- Strong versatility for multi-material lamination
- Light yellow and colorless translucent appearance
- Reliable pot life of about 40 minutes at 45C working temperature
Applications
- Food packaging lamination requiring regulatory compliance
- OPP(PET)/CPP, OPP/VMCPP, OPP/VMPET/PE structures
- NY/LLDPE and AL/PE flexible packaging
- Export food packaging with strict migration requirements
Typical Technical Parameters
| Parameter | Specification |
|---|---|
| Composition | NCO component (836A) / OH polyester polyol (836B) |
| Mixing Ratio | 100:60 (w/w) |
| Solid Content | 100% / 100% |
| Viscosity (25C) | 1500-2500 mPa.s (A) / 1000-2000 mPa.s (B) |
| Density | 1.124 / 1.146 g/cm3 |
| Pot Life | About 40 minutes at 45C |
| Gluing Amount | About 2.8 g/m2 |
| Curing | Full cure 72-96 h at 45-50C |
| Compliance | REACH, RoHS, EU 10/2011, FDA 175.105, GB9685 |
| Shelf Life | 9 months (A) / 12 months (B) |
| Packing | 20 kg/barrel, 200 kg/drum |
Directions for Use & Precautions
- Set glue cylinder, hose and roller temperatures at 38-45C according to TDS typical parameters.
- Control production environment at 20-30C and humidity 45-65%.
- Reduce 836B by 5-10% when humidity exceeds 70%; consult technicians for verification.
- For thin inner layer PE (
- Replace mixing hose daily and keep glue mixing equipment clean.
- Store in sealed original barrels at 15-30C.
FAQ
Q: Which food contact regulations does 836A/836B comply with?
A: It complies with REACH (EC 1907/2006), RoHS 2011/65/EU, EU 10/2011, FDA 21 CFR 175.105 and China GB9685.
Q: Is 836A/836B solvent-free?
A: Yes, both components are 100% solids solvent-free, eliminating residual solvent risk in food packaging.
Q: How fast does it cure?
A: It features fast curing: roll film can be slit after curing, and full cure is achieved in 72-96 h at 45-50C.
Q: What is the pot life?
A: The pot life is about 40 minutes at the standard mixing ratio with a 45C working temperature.
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