Huayu Fully Automatic 3-Layer Co-extrusion IBC Blow Moulding Machine

Overview

The Huayu 3-Layer Co-extrusion IBC Blow Moulding Machine is a dedicated accumulator-head blow moulding system independently developed for the mass production of 1000L HDPE IBC inner tanks. Built on Huayu’s long-term experience in large hollow plastic forming, this machine adopts three independent extruders and a patented multi-layer spiral die head to realise stable composite parison extrusion. Different functional materials can be assigned to inner, middle and outer layers separately, so finished IBC tanks gain excellent barrier performance, chemical resistance and UV stability compared with single-layer products. It is widely recognised by manufacturers for chemical packaging, food liquid storage and hazardous liquid logistics packaging. The whole production workflow from plasticising, parison discharging, clamping, blowing, cooling to product stripping runs automatically, which greatly lowers labour input and stabilises batch quality.

3-Layer Co-extrusion Structure & Die Head

The core advantage of this model lies in its controllable three-layer composite structure. Each extruder supports independent speed adjustment and temperature setting, so customers can configure layer ratios flexibly according to raw material formulas. The inner layer can use barrier material to resist solvent penetration; the middle layer adopts high-toughness HDPE to guarantee structural strength and impact resistance; the outer layer can add anti-UV, anti-static or anti-corrosion masterbatch to adapt to outdoor storage and harsh working environments. The self-developed accumulator co-extrusion die head features optimised flow channels, which avoids layer disorder, material degradation and melt backflow during high-volume parison accumulation. Layer distribution stays uniform across the whole parison, preventing local thin spots after blow forming.

Servo Hydraulic & Wall Thickness Control System

This machine is fitted with servo hydraulic drive and high-precision parison wall thickness control modules. Servo drive matches output power according to actual working demand instead of constant full-load operation, cutting idle power consumption and bringing obvious energy saving. The wall thickness controller supports multi-point curve setting along the parison length. Operators can set different thickness values for the tank bottom, cylinder and shoulder area. The system responds rapidly to adjust valve opening in real time, so the finished IBC tank achieves even stress distribution. This effectively reduces defective issues such as partial thinning, bulging and cracking, and helps finished containers pass UN packaging test requirements. The hydraulic circuit uses high-performance hydraulic valves and sealing components for stable pressure output and low failure rate during long continuous running.

Clamping Unit & Mechanical Frame

The heavy-duty clamping frame is welded and stress-relieved, with high rigidity and anti-deformation performance under long cyclic load. The large-tonnage clamping system provides balanced, consistent clamping force, which prevents flash and ensures clear mould lines. Mould installation and replacement are designed for convenient operation, shortening mould change downtime between different IBC specifications. All key transmission parts use hard-tooth gear reducers and high-quality linear guide assemblies, running smoothly with low noise and long service life. Heating zones on barrels and die head adopt nano thermal insulation heating rings, improving heating efficiency and reducing heat loss to the workshop environment.

Operation & Safety Configuration

The machine is equipped with a colour touch screen operation terminal and PLC control system. All process parameters including temperature, extrusion speed, parison time, blowing pressure and clamping timing can be saved as recipe files. Operators can switch formulas quickly for different material formulas or product standards. Multi-language interfaces are available to serve global operation teams. Safety protections include safety gratings, emergency stop buttons, pressure overload protection and door interlock functions. Once abnormal signals are triggered, the system will pause automatically to protect operators and mechanical parts. Remote online diagnosis is supported for fast troubleshooting and technical guidance.

Application & After-sales Support

Finished IBC tanks from this machine fit for packaging of industrial chemicals, detergents, liquid fertilisers, edible liquids and other non-explosive liquid goods. Huayu provides complete services including layout drawing, installation guidance, on-site commissioning, operator training and spare parts supply. Standard warranty covers main mechanical parts, and lifelong technical consultation is available. Customised upgrades such as gravimetric dosing systems, automatic deflashing units and auxiliary cooling lines can be configured according to customer workshop layout and production targets.