What is a solventless laminating machine?
A solventless laminating machine (solvent-free laminator) is core flexible packaging processing equipment that bonds two or multiple roll substrates with 100% solid two-component PU adhesive (AB glue), totally without solvent-based glue, no solvent evaporation or drying tunnel required, completing lamination via chemical cross-linking curing instead of solvent volatilization. It’s the mainstream eco-friendly lamination equipment replacing traditional dry solvent laminator in plastic packaging industry.
Core Working Flow (4 main units)
Unwinding Unit: Dual independent shaftless unwinding for film, aluminum foil, paper; dancer roller PLC closed-loop tension control to avoid material stretch & wrinkling.
Precision Coating Unit: Mix A/B polyurethane glue proportionally online, apply ultra-thin uniform glue layer on one substrate via metering rollers (no solvent dilution).
Laminating Nip Unit: Two substrates are pressed tightly by composite rollers to finish instant compound bonding.
Rewinding Unit: Finished multi-layer laminated web is wound into finished roll for later natural curing.
Key difference vs solvent laminator: no long drying oven, saves heating energy entirely.
Main Applicable Materials
BOPP, PET, CPP, PE, NY, aluminized film(VMPET/VMCPP), aluminum foil, kraft paper; for duplex/triplex composite structure.
Outstanding Advantages
● Eco & Safe: Zero VOC exhaust, no fire/explosion risk from flammable solvent, compliant with global environmental regulations.
● Food & Pharma Grade: Zero solvent residue on finished film, perfect for food pouch, medicine packaging, baby food packaging with strict hygiene standards.
● Cost Saving: Lower glue consumption (~50% less than solvent glue), cut electricity cost from drying oven; max running speed up to 350–450m/min for high output.
● Compact Layout: Remove huge drying section, smaller floor space, easier workshop layout.
Common Application Fields
Food flexible packaging, pharmaceutical packaging, daily chemical sachets, aluminum foil composite bags, high-barrier vacuum packaging, adhesive tape base lamination.
