Update:For export food packaging manufacturers, food contact safety certification is the core threshold. LB 165A matched with L...
For export food packaging manufacturers, food contact safety certification is the core threshold. LB 165A matched with LB 165B hardener fully meets international and domestic safety regulations, covering FDA §175.105, BfR XXVIII, EU 2002/72/EC and Chinese GB 9685-2016. Fully cured adhesive has qualified specific migration limits, completely safe for direct food contact.
Beyond reliable safety performance, this solvent-based polyurethane adhesive has wide substrate adaptability, covering aluminum foil, pre-treated PE, BOPP, CPP, PET, nylon and metalized films. It can resist high-temperature boiling and retort sterilization, with stable bonding performance against grease, acid and alkaline food contents. Low viscosity formula ensures smooth coating on gravure rollers, supporting continuous mass production.
The mixing ratio is flexible for different composite materials: fixed 20:3.5 for general films, 20:3.0–4.0 for metalized film structures. Only low-water ethyl acetate, acetone and MEK are allowed for dilution; other solvents will damage adhesive performance.
Workshop environment directly affects usable time of mixed glue. Normal workshops allow 8-hour pot life, while tropical high-temperature humid workshops shorten it to 2 hours. Control dry coating weight between 2–3.5 g/m², and increase coating amount for printed films to avoid poor adhesion on ink layers.
Curing cycle is clear for production scheduling: preliminary compound strength forms within several hours, while full anti-high-temperature and anti-chemical performance needs 7–14 days room-temperature curing. Raw materials have a long shelf life of 9 months under sealed storage. Since hardener contains polyisocyanate, wear protective equipment to avoid skin irritation.
All packaging factories producing export food pouches can choose LB 165A/LB 165B to simplify safety certification inspection procedures and reduce product return risks.