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SXGM-3 × 3400 Three layer Co extruded Film Bubble Cold Traction Rotary Composite Film Production Line
Standard configuration and main technical parameters
1、 Main technical parameters:
Product width: 3000mm
Product thickness: 0.02-0.15mm
Thickness deviation: (2 sigma)
0.01-0.039mm≤±10%
0.04-0.059mm≤±8%
0.06-0.10mm≤±7%
0.10-0.15mm≤±6%
Three layer co extrusion structure: A/B/C
Total installed power: approximately 260KW
Applicable raw materials: LDPE LLDPE/LDPE mLLDPE, etc
Dimensions (L × W × H): Approximately 12500mm x 8000mm x 13300mm
2、 Standard configuration:
1. Extruder:
Three SJ90/30 extruders, 55kw AC motor, frequency converter controlled speed regulation.
1.1 Screw structure: The screw is designed with a shear section and a mixing section to reduce pressure and production fluctuations, and improve the uniformity of the melt.
1.2 Screw diameter: Φ 90-1/30
1.3 Screw speed: 15-90rpm (SJ90/30)
1.4 Screw surface hardness: HRC56-60.
1.5 Screw barrel material: 38CrMoALA high-quality alloy steel, processed by solid solution+aging -2 times quenching and tempering heat treatment process, surface treated with nitriding, wear-resistant.
1.6 Surface hardness of the barrel: HRC60-62.
1.7 The barrel is made of high temperature resistant stainless steel with a heating voltage of 380V.
1.8 Barrel heating section: 6 sections.
1.9 Barrel heating power: approximately 25.2KW (SJ90/30).
1.10 Cooling method for the barrel: automatic air cooling for overheating, water cooling for the feeding section.
1.11 Quick screen changing device: The screen changing area is automatically sealed without leakage and equipped with hydraulic screen changing. Replacing the filter is convenient and quick, saving time and effort.
1.12 Quick change part heating power: about 4kw.
1.13 Intelligent Melt Pressure Display: Digital LCD displays the melt pressure inside the extruder and monitors the working status of the extrusion system in real time.
1.14 Digital LCD Temperature Control Meter: The digital LCD displays the set temperature and actual temperature of each temperature control section, making operation intuitive and convenient.
1.15 Gear reducer: The gears have undergone hardening treatment and surface grinding, resulting in smooth transmission with characteristics such as low noise, high speed, high torsion, and wear resistance. Model 250-1/20. 2 units of Type 1. 1 unit of Type 2.
1.16 Deceleration method: The gearbox is used for deceleration, and the transmission ratio is reasonable. Adopting a direct coupling structure.
1.17 Transmission mode: Coupling direct drive.
1.18 Drive motor: 1 55kw motor and 2 45kw motors run smoothly with good heat dissipation effect.
1.19 Speed Control Method: Variable frequency drive controls speed control, which is efficient, energy-saving, precise, sensitive and reliable in speed control.
1.20 hopper: made of 50kg stainless steel.
1.21 Contactor and air switch: Zhejiang "Chint".
2. Three layer co extrusion internal cooling mold and air ring
2.1 The mold design is scientifically reasonable, the material flow is evenly distributed, and the production of thin film products is ensured to have good thickness uniformity; The design structure of the flow channel is smooth and free of dead corners. The flow channel is finely ground and polished before being plated with hard chromium, resulting in a high surface smoothness and good transparency and glossiness of the produced thin film products.
2.2 New high-efficiency cooling air ring: The optimized design of the new air ring ensures uniform and stable air volume adjustment, providing extremely high cooling effect and film bubble stability, thereby ensuring high production, good transparency, and thickness tolerance.
2.3 Mold processing: Independent precision processing is completed by a precision four axis linkage machining center to ensure the machining accuracy of the mold and the uniformity of material distribution in each layer.
2.4 Mold specification: Φ 700
2.5 Mouth mold gap: 2.3mm
2.6 Mold Material: 40Cr
2.7 Heating method: Strip shaped high-temperature resistant stainless steel heating ring.
2.8 Wind ring material: cast aluminum alloy material - dual air outlet automatic adjustment structure - matched with online thickness gauge to adjust film thickness deviation.
2.9 Mold heating power: approximately 40kw-380V
2.10 Temperature control section: 5 sections.
2.11 External cooling fan: 22kw fan, frequency converter controlled speed regulation.
2.12 The IBC membrane bubble cooling device consists of an inlet device that provides cold air flow to the inside of the membrane bubble and an exhaust device that discharges hot air flow.
2.13 Membrane Bubble Detection System: A digital bubble diameter detection system consisting of three ultrasonic sensors (Germany - Beckhoff UB800).
3.9 First traction roller clamping method: pneumatic clamping control.
3.10 Drive motor and its control: 3.7kw AC motor, frequency conversion control.
3.11 Traction speed: 5-50 meters per minute
3.12 Transmission mode: Adopting direct transmission instead of sprocket and chain transmission, it runs smoothly and has constant tension. Fundamentally eliminating the impact of speed fluctuations caused by chain shaking on film tension.
3.13 Air cushion roller: The external air cushion prevents direct contact between the film and the air cushion reversing roller, avoiding scratches on the surface of the film.
3.14 Guide roller: Made of aluminum alloy material, calibrated for dynamic balance.
3.15 Flattening roller: an arc-shaped flattening roller that flattens the film surface without folding.
3.16 EPS Ultrasonic Correction System: Automatic correction guidance to ensure neat film winding.
3.17 According to customer needs, reserve installation positions for corona treatment machines for easy operation and maintenance.
4. Winder: Dual station passive friction automatic roll changing, A and B roll separation adjustable.
4.1 Winder drive motor: 2.2kw AC motor, frequency converter controlled speed regulation.
4.2 Second traction drive motor: 2.2kw AC motor, frequency converter controlled speed regulation.
4.3 Second traction pinch roller: pneumatic control.
4.4 Winding speed: 5-50 meters per minute
4.5 Maximum bending diameter: 3000mm
4.6 Maximum roll diameter: Φ 800mm.
4.7 Cold cutting device: The film can be cut into multiple films online according to the product specifications.
4.8 Length Calculation Device: When the film roll reaches the set length, the electric whistle will automatically sound an alarm to remind to change the roll.
4.9 Inflatable scroll: 4 pieces.
4.10 Tension closed-loop control system: A new automatic tension control system is adopted to achieve automatic tension adjustment based on the measured tension changes of the film, ensuring a constant winding tension of the film.
4.11 Flying knife cutting, automatic roll change.
4.12 Equipped with a robotic arm. Automatic axis grabbing. Replace manual operation
5. Electrical control system:
5.1 Extruder control cabinet: Monitor and control the processing temperature, screw speed, current, and other working conditions of three extruders separately.
5.2 PLC control system.
Online thickness gauge - automatic adjustment of air ring. Using a 360 degree scanning from the center of the circle. Contact capacitance measurement. Using American IN acquisition cards and sensors. Equipped with an automatic adjustment air ring. Wireless IoT communication. Automatically adjust the probe distance and position based on the diameter of the membrane bubble. Online measurement of film thickness. Automatic correction and adjustment of film thickness deviation. The Windows 7 system is easy to operate. Stable performance.
