7 9 11 Barrier Blown Film Extrusion Line

Food and Medical High-Barrier Packaging:
The 7-layer or 9-layer A/B/C/D/E/F/G (up to I) structure allows the integration of EVOH, PA (nylon), and PVDC barrier layers. This is critical for vacuum packaging of meat, cheese, and ready-to-eat meals, where the oxygen transmission rate (OTR) requirement is < 1 cc/m²/day.

Industrial Composite Substrates:
The wide width (up to 2100 mm) makes it ideal for producing heavy-duty shrink film for beverage multipacks and industrial stretch-wrapping pallets; the 0.2 mm thickness ensures load stability.

High-Speed Liquid Packaging:
For form-fill-seal (FFS) equipment processing milk or juice, the line delivers strict thickness tolerances of ±3%, ensuring seal integrity while avoiding material waste.

Actual Case:
A leading flexible packaging converter in Southeast Asia adopted the JBF23007/9X to replace their existing 5layer line. By using the 9layer configuration (A/B/C/D/E/F/G/H/I), they separated the tie resins from the structural PE layers. While maintaining the same barrier performance, EVOH consumption was reduced by 22%, saving approximately USD 150,000 annually in raw material costs, while output increased to 480 kg/h.

A.Unmatched Structural Flexibility (7+2 Configuration)
The equipment supports both 7-layer and 9-layer co-extrusion. This flexibility allows you to run a 7-layer structure for standard shrink film at lower power consumption (250 kW) and switch to a 9-layer structure for high-barrier nano-films without changing the die. This dual-rated capability protects your investment against market shifts toward lighter, stronger films.

B.Optimized Energy-to-Output Ratio
Competitors often require over 350 kW to achieve 300 kg/h, whereas the JBF-1800 model achieves 300–400 kg/h at 300–350 kW (verified by third-party audit). High-efficiency AC motors and ceramic heating rings reduce unit energy consumption to below 0.9 kWh/kg, significantly lowering carbon footprint and electricity costs.

C.Superior Bubble Stability at Ultra-Thin Gauges
Producing 0.03 mm film often leads to “sharkskin” or bubble oscillation. The JBF series integrates a heavy-duty dual-lip air ring and an IBC (internal bubble cooling) system that automatically adjusts air flow based on thickness feedback. Even at maximum width (2100 mm), the frost line height remains stable, ensuring flat film suitable for high-speed printing.

D.Modular “Plug-and-Play” Extruders
Each extruder (A to I) features a quick-clean clamp design. Changing color masterbatches or switching resins takes only 45 minutes (industry average is 2 hours), reducing downtime by more than 60%.

We adhere to a “zero-defect” shipping commitment through a 4-stage QC protocol that goes beyond standard ASTM testing:

Final Step: Factory Acceptance Test (FAT)
Using PA/EVOH materials, the line runs continuously at full production speed for 24 hours, achieving 90-100% of rated maximum capacity without melt fracture.
Special Test for JBF-2300: We conduct a specific “neck-in” test using 100% LLDPE; neck-in on each side is maintained below 30 mm, ensuring edge trim waste is less than 3% of total output.

Q1: Can this line run 100% post-consumer recycled (PCR) material?
A: Yes. In the 9-layer configuration (A/B/C/D/E/F/G/H/I), we recommend placing the PCR material in the core layer (E or F). The barrier layers (B, D, F, H) protect the recycled content from contacting food-contact surfaces. We have helped a Chilean customer successfully run up to 40% PCR content with the JBF-1600 model without loss of clarity.

Q2: How do you ensure that the 0.2 mm thickness limit does not cause “die swell” issues?
A: The die is equipped with a variable gap adjustment function. For thick-gauge films (0.2 mm), we reduce the die gap to 1.2 mm and increase the draw ratio. The automatic profile-adjusting die adjusts bolt heaters every 30 milliseconds to actively counteract thickness bulges. During installation, we will provide comprehensive training on the “anti-swell” recipe.

Q3: What is the actual power consumption difference for the JBF-2300 between 7-layer and 9-layer operation?
A: Running a 9-layer structure typically requires starting two additional extruders (up to 2×30 kW). However, because 9 layers allow the use of lower-viscosity resins in the skin layers, extruder motor torque is often reduced. The net result: approximately 280 kW for 7-layer and about 300 kW for 9-layer. The increase is only about 7%, while barrier performance improvement often exceeds 30%.

Q4: What spare parts do you recommend stocking for the IBC system?
A: We recommend keeping one set of IBC ultrasonic sensors and proximity switches for the oscillating haul-off. Given the 1500-2100 mm width, internal air pressure sensors are also critical. We provide a 2-year warranty on the IBC computer motherboard, which is the most sensitive component.

Q5: Can the JBF-1800 be upgraded to the JBF-2300 model later?
A: The main extruders and die are specifically designed for the rated output. However, we offer a “tower extension kit” that increases the bubble cage height, allowing you to run at higher speeds (up to 15 m/min) and, by improving cooling rates, raise the JBF-1800 from 400 kg/h to near 450 kg/h without upgrading the motors.