#extrusion laminating machine

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Laiyi Extrusion Lamination Machine Performance, Advantages

Laiyi Extrusion Machine Knowiedge Guide

Using LAlYl patented screw with characteristics of high revolving speed,high shear,high mixing,wear-resistant and energy-saving,to ensure the temperature difference between die lips and the polymer coming out of the die less than 30 ℃, which will greatly enhance the peeling strength.

The inner wall of the barrel and the surface of the screw are centrifugally cast with special technology,which has the characteristics of corrosion and wear resistance. lt is normally three times of the ordinary screw's service time.

Shaftless unwinder, equipped with auto-splicer, can achieve butt to butt splicing,thus to reduce the damage to corona and laminating rolls.

Heavy duty roll-pressing rewinder can achieve up to 300m/min auto-splicing with neat paper reel sides.

Optional automatic shaft pulling system, improves robotic level and reduces dependence on people

Equipped with international first-class electricalbrands to ensure efficient and stable operation of electrical systems.

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Daily Maintenance Key Points for Extrusion Coating Machine Die

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Main Functional Features of Automatic Extrusion Laminating Machine

Laiyi Lamination Machine Knowledge Guide

PLC Human-Machine Interface (HMI) Centralized Control: Integrates mechanical, electrical, and pneumatic systems into a unified design.

Fully Automatic Constant Tension Control: Ensures smooth and stable operation.

Photoelectric Web Guiding + Corona Treatment: Effectively enhances peel strength.

Dual-Station Unwinding and Rewinding: Supports non-stop roll changing for continuous production.

Hydraulic Screen Changer + Quick-Change Mechanism: Minimizes downtime during screen replacements.

Advanced Temperature Control System: Automatically regulates temperatures across individual heating zones.

Multi-Layer Co-Extrusion Capability: Supports 2 to 7 layers of composite lamination (requires additional extruder units).

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What is an Extrusion Coating and Lamination Machine? An extrusion coating and lamination machine is an industrial system used to apply a "plastic raincoat" to substrates such as paper, paperboard, non-woven fabrics, woven fabrics, and aluminum foil.

Its core function can be summarized as follows: it melts plastics like polyethylene (PE) and polypropylene (PP) at high temperatures and coats them uniformly onto the substrate surface. This creates a protective film layer that provides waterproofing, moisture resistance, oil resistance, and enhanced structural strength.

Process Overview The typical workflow of an extrusion coating line follows this sequence: Unwinding → Pre-heating → Corona Treatment → Extrusion Coating → Cooling → Edge Trimming → Rewinding

Driven by a screw extruder, plastic resin pellets are heated and melted. Once extruded through the die, the molten plastic cascades down like a "waterfall" onto the substrate surface. After being hot-pressed and cooled, the plastic layer bonds securely with the substrate. The entire process is highly automated, with production line speeds reaching 100–150 meters per minute or even higher.

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Core Advantages of Extrusion Lamination Machines

Laiyi Lamination Machine Knowledge Guide

Eco-Friendly and Safe Zero Solvent Residue: Since it does not utilize organic solvent-based adhesives, it fundamentally eliminates VOC (Volatile Organic Compound) emissions and solvent retention issues.

Food Packaging Friendly: It is particularly well-suited for fields with stringent safety and hygiene standards, such as food and pharmaceutical packaging.

Aligned with Green Trends: It eliminates the need for auxiliary solvent recovery systems or RTO (Regenerative Thermal Oxidizer) incineration systems.

High Cost-Efficiency Eliminates Adhesive Costs: It replaces expensive laminating adhesives with cost-effective raw resin pellets (such as PE or PP).

Optimized Energy Consumption: Without the need for high-energy long drying tunnels, its overall energy consumption is typically lower than that of dry lamination.

Simplified Material Sourcing: Resin raw materials enjoy a stable supply chain and relatively predictable price fluctuations.

Integrated Functionality Dual-Purpose Interlayer: The extruded resin layer simultaneously acts as the bonding agent, heat-seal layer, and moisture barrier.

Single-Step Forming: It shortens the process chain by transforming raw pellets into finished laminated structures in one continuous run, maximizing production efficiency.

Ideal for Mass Production: It delivers exceptional economics for high-volume products with standardized structures (e.g., aseptic milk cartons, instant noodle packaging).

High Production Efficiency High-Speed Operation: Typical production speeds range between 100–300 m/min, significantly outperforming dry lamination.

Seamless Roll Changing: Because it requires no curing time or solvent evaporation waiting periods, it excels at continuous, heavy-duty production runs.

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Extrusion Casting/Lamination vs. Dry Lamination: Key Differences

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How to Maintain Lubrication for Extrusion Coating Machines?

Laiyi Extrusion Coating Machine Knowledge Sharing Regularly add lubricating oil to all lubrication points, and select lubricants suitable for the working environment. Pay special attention to the lubrication of the bearings at both ends of the heating roller and the gearbox reducer. Apply high-temperature resistant grease (such as molybdenum disulfide grease) to transmission components like screws and other drive parts.

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How to Conduct Periodic Inspections for an Extrusion Coating machine?

Laiyi Knowledge Guide 1.Coating Roller Weekly cleaning and radial run-out detection(s0.05mm) 2.Hydraulic SystemMonthly filter element replacement and pressure testing. 3.Electrical Cabinet Quarterly terminal tightening (wiring reinforcement) andinsulation resistance testing. 4.Transmission Components Inspect chain tension and bearing lubrication, Replacegearbox lubricant every 2,000 hours (Grade lsO VG 220).