What is the relationship between output capacity and film width in blown film machines?

1350ABA film blowing machine (Single-side 50 μm film‌)

2026-01-16

Core Structure and Working Principle

3 Layer Co-Extrusion Structure:Utilizes a twin-screw extrusion system and co-extrusion die to melt the outer layer (A) and the intermediate layer (B) separately, achieving an A-B-A composite structure. This enhances the film's mechanical strength, barrier properties, and heat-sealing performance.

Low-Pressure, High-Speed Process:Achieves high-speed blow-up at lower air pressures, reducing energy consumption while ensuring film thickness uniformity. Suitable for precision thickness control scenarios such as 50 μm.

Intelligent Temperature Control System:Independent PID control for each temperature zone, with an accuracy of ±1°C. Compatible with various resins including LDPE, LLDPE, PP, and PET.

High-Efficiency Airflow Cooling:Equipped with a dual-ring airflow cooling system for rapid film bubble curing, reducing shrinkage and improving surface finish and production stability.

Typical Application Scenarios:

Food Packaging:Used to produce high-barrier three-layer composite bags, extending shelf life.

Agricultural Mulch Film:50 μm thickness balances light transmittance and tear resistance, suitable for greenhouse covering.

Logistics Vest Bags:High-toughness A-B-A structure, strong load-bearing capacity, suitable for e-commerce express packaging.

Contact us now:

ryanzhang911222@gmail.com +86 13771616165 Mr.Zhang

Expert Insights & FAQ

The extruder screw diameter determines the output capacity (kg/hr), while the die head diameter and Blow-Up Ratio (BUR) determine the film's layflat width. To spec a machine, you should define your target width and thickness first, then work backward to determine the required output and screw size. How do I spec the right extruder size for my target film width?

Extruder size is determined by output demand: a 55mm screw delivers 80–120 kg/hr, while a 90mm screw reaches 300–400 kg/hr. Always spec the machine by working backward from your target layflat width and film thickness. film-blowing-machine-extruder-calculation

By upgrading to servo drive systems (saving 28-34% on haul-offs), implementing OEE monitoring, and optimizing IBC cooling systems, manufacturers can significantly reduce energy draw per kg of film. Energy saving blown film tips

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