Kung Hsing blown film system ensures better film quality, higher productivity

With over five decades of expertise in extrusion technology, Kung Hsing Plastics Machinery has become a trusted partner for packaging and film manufacturers worldwide. Offering 3-layer to 9-layer co-extrusion blown film lines, Kung Hsing delivers systems that combine high productivity, precision, and energy efficiency, meeting the diverse needs of today’s packaging, agricultural, and industrial film markets.

Setting New Benchmarks in High-Performance Blown Film Production

Kung Hsing’s 5-layer high-speed co-extrusion blown film line sets a new industry standard. Equipped with a 300 mm die, the system achieves an output of up to 600 kg/h, nearly double that of many comparable machines. With energy consumption as low as 0.37 kWh/kg, significantly below the industry average of 0.5 kWh/kg, manufacturers can effectively reduce operating costs. Features such as quick-change material die design, recipe memory, and automatic temperature control help minimize material waste while ensuring consistently stable film quality.

KS-ML-7-55: The 7-Layer Co-Extrusion Blown Film Line

At K 2025 in Germany, Kung Hsing presented its the 7-layer co-extrusion blown film line KS-ML-7-55, equipped with seven 55 mm “eXtreme” extruders, each delivering 150 kg/h, for a total output of 1,050 kg/h.

The line utilizes Kung Hsing’s proprietary Spiral Mandrel Die, ensuring uniform layer distribution, excellent thermal balance, and film thickness tolerance within ±2.5%. An optional CERTO-Freeze secondary cooling system can reduce bubble temperature by approximately 10°C, making it ideal for plants with limited tower height.

The 3-in-1 winding system provides flexible switching among gap winding, contact drive winding, and typical surface winding, and supports both forward and reverse film winding, allowing stable winding performance across various film structures and applications.

KS-ML-7-55 – Technical Highlights

1. Closed-loop thickness control system for consistent and stable film gauge
2. Multi-material compatibility, including LLDPE, metallocene PE, HDPE, PP, EVA and barrier resins
3. High output-to-die-diameter ratio (>2:1), demonstrating superior engineering performance
4. Energy-saving motors and intelligent control systems to reduce electricity consumption
5. Automation and monitoring systems that reduce labor requirements and enable real-time diagnostics and data utilization.

Kung Hsing’s technologies deliver real results in real production environments:

Case 1 – European Flexible Packaging Converter

By operating Kung Hsing’s multi-layer blown film lines, the customer has successfully produced high-quality lamination films and food packaging materials that meet stringent European market requirements. The equipment enables stable production of multi-layer structures with excellent gauge uniformity, supporting high-speed lamination and consistent downstream converting performance. Through reliable process control and material efficiency, the customer is able to reduce film thickness while maintaining barrier performance and visual quality, strengthening competitiveness in regulated food packaging applications across Europe.

Case 2 – Agricultural Film Manufacturer in Asia

After upgrading to Kung Hsing’s co-extrusion system, the customer successfully developed longer-lasting greenhouse films with superior UV resistance, gaining strong market recognition for durability and reliability.

Case 3 – Industrial Film Producers in the USA and Mexico

By adopting Kung Hsing’s high-performance extruders, customers successfully produced industrial films using 100% recycled materials, achieving a 40% increase in output beyond initial expectations—without compromising film quality.

Kung Hsing actively responds to the industry’s growing demand for sustainable production. Its multi-layer co-extrusion blown film lines are designed to stably process recycled resins and biodegradable materials while maintaining high output and consistent film properties. This enables manufacturers to increase recycled content without sacrificing product performance, meeting global environment sustainability standards.

In 2026 and beyond, Kung Hsing will continue integrating recycling technologies, bio-based materials, and smart automation into its equipment portfolio. By combining high throughput, low energy consumption, and eco-friendly material processing, Kung Hsing ensures every customer remains competitive in an evolving global manufacturing landscape.

For more information, visit: https://www.kunghsing.com.tw/en/index.html