Seven-Layer Co-Extrusion Blown Film Machine

Materials & Applications

• Suitable Materials:
  • LDPE, LLDPE, mLLDPE, HDPE, EVA for all PE film.
  • LDPE, LLDPE, mLLDPE, HDPE, PA, EVOH, for Barrier film.
• Applications: Lamination film, shrink film, food packaging film

Production Range & Output Performance

• Film Width: 1200 – 1600 mm
• Film Thickness: 20 – 150 microns
• Maximum Output: 1050 kg/hr (150 kg/hr × 7 extruders for all PE)
• Typical Production Condition: 1550 mm × 55 microns ≈ 800 kg/hr
• Layer Thickness Ratio: 1 : 1 : 1 : 1 : 1 : 1 : 1
• Die Head Diameter: Ø 400 mm
• Extruder Screw Diameter: Ø 55 mm

K-Design Dual Cooling System:

• Automatic Lifting Air Ring (COM3 Design)
• IBC (Internal Bubble Cooling) System
• Second Cooling System
• 360° Thickness Measurement System

The combination of IBC and second cooling ensure stable bubble formation, superior gauge uniformity, and high-quality film appearance under high-output conditions.

Control & Automation Integrated Computer-Based Control System

• Doteco Gravimetric Dosing System with Extrusion Control and Material Conveying
• Meech Static Elimination System (UK)

Take-Up & Winding System

• Take up Unit:

Upper oscillating system with automatic positioning, designed to enhance real winding quality of reels.

• Winder: Face-to-face or back-to-back premium winder

Dual-side fully automatic gap type combined with Contact Drive Winding

• Taper tension; precise tension control

Key Advantages

• Seven-layer co-extrusion design for high-end packaging films
• Dual cooling technology for superior gauge uniformity at high output
• Oscillating unit improves reel roll quality
• Contact drive winding combined with gap winder to ensures full function winding and stable roll structure
• Designed for production rates up to 800 kg/hr
• Backed by over 50 years of blown film line integration experience from KUNG HSING Plastic Machinery
• The KS-ML7-55 is a reliable seven-layer blown film solution for manufacturers seeking premium film quality, high efficiency, and long-term production stability.