Extrusion Lamination Coating Line

·Integrated Roller Manufacturing
Most equipment manufacturers assemble complete lines using externally sourced rolls, resulting in mismatched heat exchange precision and roundness parameters across different brands—leading to thickness variation, gel defects, and haze inconsistency at high speed. This line features chill rolls, leveling rolls, and lamination nip rolls all forged and machined in-house with unified thermal and dimensional parameters. Chill roll surface temperature differential ≤±0.5℃ ensures consistent cooling and solidification across the full web width, delivering film thickness uniformity far superior to assembled generic equipment for CPP, CPE, and PLA biodegradable films.

·Biodegradable Material Dedicated Plastication
Conventional generic casting line screws and temperature zones are only optimized for PE and PP resins. Processing biodegradable materials with narrow thermal stability windows leads to thermal decomposition and internal particle defects. This system features a screw with optimized length-to-diameter ratio and flight geometry specifically for low-melt-strength, temperature-sensitive PLA and PBAT resins. The extruder, die, and chill roll sections are divided into 28 independent temperature control zones with individual setpoint accuracy ±0.8℃, precisely maintaining melt temperature within the narrow processing window. Continuous production of biodegradable films produces no yellowing, no gels, and stable layer peel strength meeting EU packaging standards.

·Closed-Loop Synchronized Tension Control
Generic casting lines using segmented VFD speed control experience significant tension variation at high speed, causing 12–80μm thin films to stretch, wrinkle, and wind with uneven edges. This line is equipped with Siemens PLC coordinated closed-loop control across unwinding, extrusion, lamination, traction, and turret winding sections with coordinated speed fine-tuning. High-precision edge correction maintains web lateral deviation ≤±0.3mm, suitable for continuous production of premium food packaging, medical films, and electronic protective films.

·Three-in-One Modular Production
The system supports three modes—monolayer casting, multi-layer co-extrusion, and substrate lamination coating—switchable without major machine modification. Small and medium-sized converters can flexibly switch between product categories based on orders, significantly reducing capital investment in multiple dedicated lines. Versatility far exceeds single-function dedicated casting equipment.

·Wear-Resistant Construction for Continuous Operation
Designed for 24/7 annual production with key transmission components hardened through nitriding treatment. Annual failure rate below 1.8% reduces maintenance demands in overseas facilities with limited technical staff. Rolls support on-site local polishing repair. Wear parts are standardized and interchangeable globally. Remote electrical commissioning service minimizes downtime—annual maintenance hours reduced by 60% compared to imported equipment.

Food and eco-friendly packaging films (LLDPE stretch film, CPP retort film, PLA biodegradable bag film, fresh-keeping cast film) for fresh produce packaging, cooked food packaging, and disposable food container lamination—primary purchase for Southeast Asian and European eco-packaging converters. Medical and hygiene nonwoven composites (SMS, spunlace with PE lamination for protective gowns, medical sheets, diaper waterproof-breathable backsheets) with strong lamination bond strength and leakage resistance meeting global hygiene material standards. Paper and aluminum foil extrusion coating (paper cups, paper bowls, kraft bags, aluminum foil trays with PE moisture/oil barrier coating) replacing traditional film lamination with lower cost and better recyclability. Electronic functional protective films (screen release films, lithium battery separator protection films, optical base matte casting films) with micron-level thickness precision in cleanroom conditions. Industrial stretch and silage films (heavy-duty pallet stretch wrap, agricultural silage films) with balanced puncture resistance and tack for Middle Eastern and Latin American logistics and agricultural markets. Automotive interior plastic substrates (TPO, EVA flexible skins for subsequent embossing) integrated with downstream embossing lines.