Blow Film Machine

Blow film machine produces plastic film rolls that serve as raw material for bag making machines. The quality of blown film—including thickness consistency, width accuracy, and material properties—directly affects the efficiency and output quality of downstream bag production. Many of our customers purchase both machines to control the entire production chain from raw material to finished bags.

Consider three key factors: production volume (daily bag output determines required film output), bag type (different bags require specific film characteristics—LDPE for fresh bags, HDPE for shopping bags, LLDPE for stretch requirements), and material strategy (if using recycled content, ensure the extruder is designed for it). Our sales team can calculate the optimal match between blow film capacity and your bag machine requirements.

Yes, our machines are engineered with specialized screws and cooling systems to handle up to 40% recycled content while maintaining consistent film quality. For higher recycled content or challenging post-industrial scrap, we recommend our heavy-duty extruder package with enhanced filtration and mixing capabilities.

Our blow film machines produce films from 0.015mm to 0.15mm (15-150 microns) with thickness tolerance of ±5%. Tighter tolerance is available with optional automatic gauge control (AGC) systems, which is essential for high-speed bag making where thickness variation causes sealing and feeding issues.

Poor film quality—inconsistent thickness, uneven winding, or contamination—can cause bag machine downtime, wasted material, and inferior bag seals. A well-tuned blow film machine with consistent output reduces bag machine adjustments, increases uptime, and ensures final bag quality. Customers who integrate both systems typically report 15-20% higher overall efficiency.