Huayu 2000L 14-Layer Co-extrusion Accumulator Head Extrusion Blow Molding Machine

This Huayu 2000L 14-layer co-extrusion accumulator head blow molding machine represents an advanced solution for manufacturing high-barrier large hollow plastic containers, specially engineered for the production of chemical storage tanks, hazardous liquid drums, IBC inner liners and anti-permeation liquid packaging vessels. Built on mature accumulator extrusion blow molding technology, this equipment integrates multi-layer co-extrusion structure to achieve outstanding barrier performance, solving the core pain points of ordinary single-layer containers such as easy penetration, poor corrosion resistance and short service life when holding solvents, oils, pesticides and various corrosive chemical media.

The whole machine adopts a heavy-duty frame structure with high rigidity and stable deformation resistance, which can keep consistent running accuracy under long-time continuous production. It is equipped with independent 14 groups of extrusion systems. Each extrusion unit can separately adjust material feeding speed, temperature and plasticizing pressure, so that different functional raw materials can be uniformly plasticized and laminated inside the accumulator head. The material layers are tightly combined without delamination or bubble defects. Customers can configure different barrier resins, bonding layers and structural layers according to actual product requirements to customize the permeability resistance, acid and alkali resistance, ultraviolet resistance and mechanical strength of finished containers. The layer thickness of each channel can be set independently on the human-machine operation interface, supporting flexible formula switching for different orders.

For wall thickness control, this machine is fitted with high-precision axial and radial wall thickness control modules. Servo hydraulic drive is adopted for the accumulator head die gap adjustment. The response speed is fast and the adjustment accuracy is reliable. It effectively avoids local thin walls, uneven wall distribution and product weight deviation, greatly improving the qualified rate of large 2000L hollow products. The hydraulic system uses stable and low-noise hydraulic components with independent cooling and filtering circulation loops. It can maintain stable oil temperature even during non-stop shift production, reduce oil deterioration and component wear, and extend the service cycle of hydraulic valves, cylinders and pump assemblies.

The clamping unit uses a heavy-duty toggle clamping structure with large clamping force and high opening stroke, which can smoothly complete mold opening, mold closing, blowing and product ejection actions for 2000L large molds. The clamping force output is uniform on the mold parting surface, preventing flash and material overflow during high-pressure blowing. The mold mounting plate has reserved standard installation holes, compatible with molds of different structures for 2000L tanks and barrels, bringing great convenience for customers to replace molds and develop new products. The blowing system supports low-pressure pre-blowing and high-pressure shaping blowing, with adjustable blowing flow and timing parameters, ensuring uniform stretching of the parison and stable shaping of large containers.

The electric control system adopts mature industrial control hardware and touch screen operation terminal. All production parameters including temperature zone setting, extrusion speed, parison length, wall thickness curve, clamping timing and blowing logic are visualized on the screen. Operators can store multiple sets of product formulas inside the system. When switching between different products, they can call the saved parameter files directly instead of repeated debugging, saving a lot of trial production time. The system has complete safety interlock and fault alarm functions. Once abnormal temperature, pressure overload, door opening trigger and other risks occur, the machine will enter protection stop immediately, and the alarm text will display the abnormal position to help maintenance staff locate problems quickly.

In terms of plasticizing performance, each extruder is equipped with high-efficiency plasticizing screw and barrel, optimized for HDPE, PP, EVOH, PA and adhesive resin materials. The heating sections use uniform heating modules with closed-loop temperature feedback. The temperature fluctuation range is small, which guarantees stable plasticizing quality and avoids material decomposition caused by overheating. The accumulator head is precision flow channel processed, with smooth runner transition and low material residence, reducing material degradation and color spots, especially suitable for processing high barrier and heat-sensitive special resins.

This 2000L 14-layer blow molding machine is widely favored by chemical packaging, new energy liquid storage, pesticide packaging and environmental liquid treatment industries. Compared with traditional single-layer or few-layer blow molding equipment, its multi-layer barrier structure can greatly extend the storage cycle of chemical liquids, reduce the risk of volatile gas leakage, and meet strict packaging testing standards for dangerous goods. It supports 24-hour continuous industrial production, with low failure rate and easy daily maintenance.

Huayu provides one-stop supporting services for this machine, including equipment installation guidance, on-site commissioning, operator training, mold matching suggestion, spare parts supply and long-term technical support. Our technical team can also optimize process parameters according to customers’ raw material conditions and product inspection requirements, helping buyers obtain stable product quality and better production benefit. If you have demands for high-barrier large hollow container production, this 14-layer co-extrusion blow molding machine will be a reliable and cost-effective production partner for your factory.