Roll-to-roll laminating machine

solvent-freeautomatedhigh-speed

Product overview
When reliable laminating equipment with zero solvent emissions is required, the Solvent-less high-precision lamination machine SLM-400 bonds flexible packaging substrates using two-component adhesives with 100% active solids. The system eliminates the need for drying ovens and solvent recovery systems, and features servo-driven tension control and micrometric gap metering to avoid defects such as tunneling and orange peel. It handles sensitive materials (including 7-micron aluminum foil) while meeting food safety regulations. Uniform coating and high precision improve final product quality.

Key technical features

• Precision Coating System: Five-roller transfer system maintains adhesive weight within ±0.05 g/m²; mechanical gap adjustment with stepper motors in 0.001 mm increments and electronic gap stops to prevent roller collision.
• Intelligent Tension Control: Closed-loop floating rollers with load cells maintain sensitivity within ≤ ±0.1 kg; multi-vector AC servo motors and taper tension software reduce winding tension linearly and prevent telescoping on high-slip laminates.
• Automated Mixing Unit: Integrated glue mixer with gear pumps and Coriolis mass flow meters ensures precise mixing ratios (typically 100:40 to 100:80); automatic shutdown if deviation exceeds 1%; automated solvent cleaning cycle to prevent adhesive cross-linking in pumps.
• Temperature Management System: Independent temperature control units regulate each roller to maintain adhesive temperature between 35°C and 45°C for optimal wettability and prevention of orange peel effect.
• Loading/Unloading: Pneumatic tape winding and air expanding shaft for roll handling.

Applications

• Food packaging: PET/AL/CPP structures for retort and hot-fill products with high bond strength suitable for sterilization processes.
• Pharmaceutical packaging: Solvent-free process suitable for drug-contact materials (e.g., OPA/AL/PVC blister structures) to avoid chemical migration.
• Daily chemical and cosmetic packaging: Taper tension control prevents telescoping on cosmetic tubes and premium laminates.
• Sustainable packaging: Designed to handle mono-material structures (BOPE/PE, BOPP/CPP) without web distortion, supporting recyclable packaging strategies.

Quality and manufacturing
Factory Acceptance Testing (FAT) is performed on every machine, including verification of nip pressure uniformity using pressure-sensitive foil. Coating and dosing rollers maintain Total Indicated Run-out (TIR) below 0.002 mm. The assembly workshop, vertical integration of key components, and an experienced R&D team contribute to consistent quality and shorter lead times.

Technical Specifications (table)
Parameter — Specification
Maximum Speed: 400 m/min
Coating Accuracy: ±0.05 g/m²
Tension Control Sensitivity: ≤ ±0.1 kg
Gap Adjustment Precision: 0.001 mm increments
Temperature Control Range: 35°C - 45°C
Mixing Ratio Range: 100:40 to 100:80
Roller Run-out (TIR): <0.002 mm
Loading/Unloading System: Pneumatic tape winding + Air expanding shaft
Compatible Materials: BOPP, PE, PET, CPP, LDPE, NY, aluminum foil, paper, composite film
Bond Strength: >3.5N/15mm (standard films)
Coating Weight Variance: <3% across web width

Characteristics / technical specifications

• Maximum Speed: 400 m/min
• Coating Accuracy: ±0.05 g/m²
• Tension Control Sensitivity: ≤ ±0.1 kg
• Gap Adjustment Precision: 0.001 mm increments
• Temperature Control Range: 35°C - 45°C
• Mixing Ratio Range: 100:40 to 100:80
• Roller Run-out (TIR): <0.002 mm
• Loading/Unloading System: Pneumatic tape winding + Air expanding shaft
• Compatible Materials: BOPP, PE, PET, CPP, LDPE, NY, aluminum foil, paper, composite film
• Bond Strength: >3.5N/15mm (standard films)
• Coating Weight Variance: <3% across web width