Narrow Heat-Seal Bag Machine — 350 / 450

Technical Architecture & Mechanical Design

The Narrow Heat-Seal Bag Machine — 350 / 450 (Heat-seal · narrow) is a high-speed, fully automated plastic bag converting system designed by Wenzhou Ashal Innomech Technology for multi-lane heat-sealing, cutting, and stacking applications. Driven by high-precision Panasonic/Yaskawa AC servo motor control systems, the machine achieves a converting speed rating of 30–150 pcs/min while maintaining cut length accuracy within ±0.5 mm. The unwinding section features an automatic photoelectric web guiding system (EPC) with magnetic powder tension control, ensuring smooth film feeding without lateral wander or material stretching. The sealing assembly incorporates heavy-duty copper sealing knives heated by ceramic heating elements and monitored by micro-processor PID temperature modules to achieve flawless, high-strength heat seals on both light-gauge and heavy-duty films. The flying cutter blade is forged from high-carbon tungsten alloy steel, delivering ultra-clean cuts across millions of continuous operating cycles. An integrated PLC interface with touchscreen HMI allows operators to set bag length, batch count, punch timing, and speed parameters instantly, reducing job setup times to under 3 minutes.