CPP Cast Film Extrusion Line

CPE cast film is widely used due to its excellent transparency, softness, puncture resistance, and heat sealability. Our JCF series – with die widths from 2500 mm to 3500 mm and final film widths from 2200 mm to 3200 mm – is designed for high-volume, high-efficiency production of thin films (0.02–0.15 mm). Common end uses include:
Hygiene & Medical Packaging – Diaper backsheet, sanitary napkin wrap, surgical drape film. Ultra-thin capability (down to 20 µm) saves material while maintaining strength.
Food Packaging – Bread bags, vegetable wrapping film, frozen food liners. High line speed (up to 250 m/min) enables mass production of printed or plain film.
Textile & Garment Bags – Soft anti-fog CPE film for T-shirt bags and bedding packaging.
Industrial Stretch & Shroud – Light-duty pallet wrap (thicker range approx. 0.12–0.15 mm).
Real case: A hygiene products manufacturer in Southeast Asia uses two JCF-3000PE lines to produce 2700 mm wide diaper backsheet film at 200 m/min. Thickness variation reduced by 30%, and material consumption per roll decreased by 18% compared to their previous blown film lines.

Based on the technical data sheet and on-site feedback, here are its competitive advantages:

2.1 High Output, Low Specific Energy Consumption
Maximum output from 600 kg/h (JCF-2500PE) to 900 kg/h (JCF-3500PE). One JCF-3500PE line can replace two smaller lines, saving floor space and labor.
200–250 m/min line speed combined with a water-cooled chill roll system ensures rapid solidification, allowing higher output without melt fracture.

2.2 Extremely Thin with Uniform Thickness (0.02–0.15 mm)
Precision die lip adjustment (automatic or manual) maintains thickness tolerance within ±5% across the full 2200–3200 mm width. This is critical for cost-sensitive packaging where every micron counts.

2.3 Wide Finished Width – Less Edge Trim Waste
Finished width up to 3200 mm (JCF-3500PE) means you can slit it into multiple narrower rolls with minimal edge trim. For example, slitting into 4 rolls of 800 mm width yields waste below 2%.

2.4 Stable Operation at High Speed
250 m/min capability of JCF-2500PE is among the fastest for monolayer CPE. This significantly reduces unit labor and energy cost. One Chinese converter reported producing 12 tons of 25 µm bread bag film per 24-hour shift using one JCF-2500PE.

2.5 Material Flexibility
Suitable for LDPE, LLDPE, mLLDPE, and their blends. Additives such as antiblock, slip, UV stabilizers can be added via gravimetric feeders.

We implement strict in-line and final inspection procedures. Below is what each batch goes through – and what you should expect when purchasing a JCF line.

3.1 In-line Monitoring (during extrusion)
Thickness gauge (beta or X-ray scanner) – Installed after the chill roll. Measures thickness profile across the full web; closed-loop automatic die lip adjustment keeps deviation within ±3% for standard orders.
Melt pressure and temperature sensors – Located at the adapter and die inlet. Alarm triggers if deviation exceeds ±5% to prevent material degradation or fluctuation.

3.2 Off-line Laboratory Tests (every 2 hours or per mother roll)

3.3 Real Case
A European packaging company purchased JCF-3000PE lines requiring thickness CpK > 1.33. During FAT, we ran 75 µm film at 180 m/min for 2 hours. The online scanner measured 72–78 µm across 2700 mm width, CpK reached 1.41. The customer accepted all three lines after witnessing the test.

3.4 Winding & Roll Quality
Each finished roll is inspected for telescoping, wrinkles, and roll core hardness (using a durometer). An automatic roll rejection system rejects rolls with edge damage.

Q1: What is the minimum thickness you can reliably guarantee?
A: For all JCF models, we guarantee stable production from 0.025 mm (25 µm) up to 0.15 mm at maximum line speed. At 0.02 mm (20 µm), we recommend reducing speed to 70–80% of maximum (e.g., 175 m/min on JCF-2500PE) to maintain thickness uniformity. Many customers produce lightweight agricultural produce bags at 20 µm without issues.

Q2: How does this compare to a blown film line for CPE?
A: Cast film offers better transparency, higher output per square meter, and tighter thickness tolerances. Blown film is more tolerant of regrind, but cast film consumes up to 25% less energy per kg and has neck-in waste no more than 5–8%. For thin-gauge CPE (< 80 µm), cast film is superior.

Q3: Can I use 100% recycled CPE pellets?
A: Yes, but with limitations. For clear film, up to 15–20% post-industrial regrind (same material) can be used without affecting haze. For opaque or black film, up to 60% is possible. We recommend a screen changer (our option #SC-300) and melt filter to remove gels.

Q4: What is the typical energy consumption?
A: For a JCF-3000PE at full output (750 kg/h), total installed power is approx. 380 kW (extruder + heaters + drives + cooling). Actual average consumption is 260–300 kWh/ton, depending on material and thickness. This is among the most efficient equipment in this width class.

Q5: How often should the die lip be cleaned?
A: With neat LDPE/LLDPE, clean every 400–500 operating hours. With high levels of slip/antiblock, reduce to 200 hours. Our die design allows lip cleaning without full disassembly – the entire process takes only 30 minutes.

Q6: Do you provide training and spare parts?
A: Yes. We supply complete spare parts kits (heaters, thermocouples, screen packs, etc.) and offer on-site or remote commissioning. Our after-sales team responds within 24 hours. We also stock critical components (chill roll drive motors, screw & barrel) in our EU and US warehouses.

Q7: What floor space is recommended?
A: Approximate line length (from extruder to winder): 18 m for JCF-2500PE, 21 m for JCF-3500PE. Required width = die width + 1.5 m (for operator access). Minimum clear height: 4 m.