🏭 Machine Overview
The three-layer co-extrusion film blowing system is built for industrial multilayer film production with consistent thickness and high output stability. It delivers a maximum film width of 1200 mm and operates within a thickness range of 0.015–0.15 mm, making it suitable for flexible packaging and technical film manufacturing. The production capacity can reach up to 140 kg/hr depending on raw-material formulation. Powered by 380 V / 50 Hz / 3-phase, the machine supports continuous high-volume operation in modern factories.

🧪 Compatible Materials
This equipment processes LDPE, LLDPE, EVA, and HDPE resins. These materials are widely used for manufacturing shopping bags, food packaging films, shrink films, agricultural covers, protective sheets, and multilayer industrial liners. The extrusion die size of ϕ250/300 mm ensures balanced melt distribution across all three layers, improving tensile strength, transparency, and sealing performance.

⚙️ Winding & Performance
The surface-friction double winder allows stable roll formation with minimal downtime during roll changes. With a roller width of 1300 mm and a winding motor rated at 16 N·m, the system maintains steady film tension. Rewinding speed ranges from 5–60 m/min, enabling efficient roll collection and consistent film quality during long production runs.

🏢 Application Fields
This line is suitable for plastic packaging factories, agricultural film plants, food-packaging suppliers, retail bag manufacturing, and industrial sheet production. Businesses producing large-scale film rolls benefit from the 1200 mm width capacity and multilayer structure that improves durability and barrier performance. It supports operations producing several tons of film per day.

💡 Series Options & Differences
Other machines in the same series are available with different outputs, die sizes, and automation levels. Technical specifications and pricing vary depending on configuration and production capacity. Manufacturers can choose a model that aligns with material requirements, daily output targets, and investment planning for long-term efficiency.

Parameters
Model	USMD-3L50	USMD-3L55	USMD-3L65
Suitable Material	HDPE, LDPE, LLDPE, EVA	HDPE, LDPE, LLDPE, EVA	HDPE, LDPE, LLDPE, EVA
Max Film Width (mm)	1200	1500	2000
Film Thickness (mm)	LD: 0.015 - 0.15	LD: 0.015 - 0.15	LD: 0.015 - 0.15
Max Extrusion Output	140 kg/hr	200 kg/hr	280 kg/hr
Extrusion Unit
Gear Box	146 / 173 / 146	173 / 200 / 173	200*3
Screw Diameter (mm)	φ50/55/50	φ55/65/55	φ65/65/65
Screw L/D Ratio	28:1	28:1	28:1
Screw/Barrel Material	38 CRMOALA	38 CRMOALA	38 CRMOALA
Barrel Cooling Fan	370W×2×3	370W×2×3	370W×3×3
Thermo Control (zone)	3×3	3×3	4×3
Driving Motor (kw)	15 / 22 / 15	22 / 30 / 22	30 / 30 / 30
Extrusion Die
Die Size (mm)	LD :φ250/300	LD :φ350/400	LD :φ500
Rotary Die Head	360° Continue Rotary	360° Continue Rotary	360° Continue Rotary
Screen Changer	Manual Mechanics	Manual Mechanics	Manual Mechanics
Thermo Control (zone)	3	4	4
Air Ring / Cooling Blower	1pc / 5.5 kw	1pc / 7.5 kw	1pc / 11 kw
Take-UP Unit
Roller Width (mm)	φ165×1300	φ165×1600	φ190×2100
Take-UP Motor (kw)	1.5	1.5	2.2
Take-UP Speed (M/min)	5 - 60	5 - 60	5 - 60
Winding Unit
Type of Winder	Surface friction double	Surface friction double	Surface friction double
Roller Width (mm)	1300	1600	2100
Winding Motor	16 N.M	1.5 kw	1.5 kw
Winding Speed (M/min)	5 - 60	5 - 60	5 - 60
Voltage	380V / 50HZ / 3PHASE	380V / 50HZ / 3PHASE	380V / 50HZ / 3PHASE
Cover Dimensions (m)	6.8×2.6×6.5	7.5×3.2×7.5	9×4.2×9