Update:Metalized CPP, metalized PET and aluminum foil composite packaging has high requirements on adhesive wetting and heat re...
Metalized CPP, metalized PET and aluminum foil composite packaging has high requirements on adhesive wetting and heat resistance, and LF 2077/LF 2188 solvent-free adhesive is specially optimized for foil and metalized film lamination. Its superior surface wetting power prevents metal layer transfer, speckles and poor transparency, delivering smooth and glossy composite appearance.
The mixing ratio can adjust hardener dosage from 60 to 80 parts when laminating metalized or aluminum foil structures, balancing peel strength and heat resistance. Finished multi-layer films withstand 100°C boiling and 121°C retort sterilization without metal layer delamination. The fully cured glue layer is transparent and elastic, never damaging the metallic barrier effect of packaging bags.
Coating weight shall be appropriately increased for metalized and foil composite to ensure full interfacial bonding. Strict web tension control is necessary to avoid foil wrinkling and curling. After lamination, store films at 35–45°C to accelerate curing, achieving complete anti-sterilization performance within 3–5 days.
All raw materials comply with global food contact regulations, safe for snack, meat and frozen food foil pouches. Unopened drums can be stored for 9 months within -30°C to 30°C. Operators must regularly check exhaust equipment to control isocyanate concentration in air. Conduct ink and film compatibility test before mass production to eliminate metal film composite defects.
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