EP-ZQ40 Injection Blow Molding Machine

Plastic melt — HDPE, PP, PS, PCTG or EVA — is injected under controlled pressure into the cavity around the core pin. The bottle neck is formed to its final dimension at this station and never remachined. After the mould opens, the core pin carrying the preform indexes to Station 2.

The blow mould closes around the preform. Compressed air (0.7–1.2 MPa) expands the softened preform outward to contact the cooled cavity wall. The 60 KN blow clamping force on the EP-ZQ40 holds the mould firmly sealed. After cooling, the mould opens and the core indexes to Station 3.

Finished bottles are automatically ejected from the cold rods and conveyed to a collection belt or packing line. All three stations operate simultaneously — injection, blow, and strip happen in parallel — giving the EP-ZQ40 a continuous, high-efficiency cycle with zero downtime between bottle completions.

The full European-style structure delivers 400 KN injection clamping — 20–30% above the comparable Chinese-market average. This increased rigidity eliminates flash on high-cavity tooling, extends mould life, and guarantees that neck dimensions remain within tolerance across every production shift.

The EP-ZQ40 uses a unique pressurized clamping architecture in which the booster cylinder is excluded from the mould open/close action. Only the working load engages the booster. This structural choice cuts total energy draw by 10–20% versus machines where the booster participates in every open/close stroke — reducing monthly utility costs substantially on sustained production.

The IBM process produces no parting-line flash and requires no post-mould trimming. Bottle weight variation holds to approximately ±1% across the run, and the bottom convexity — which is critical for stable filling-line handling — is consistently superior to extrusion blow moulded containers. Scrap material from the production process is effectively zero, dramatically reducing material cost per bottle.

Injection mould bodies are machined from imported S136 high-strength alloy steel or 4Cr13 stainless steel. Blow mould bodies may use magnesium-aluminium alloy for improved cooling performance. All cavity surfaces are finished to mirror standard.

The hot runner and preform geometry are co-designed to minimise gram-weight deviation and wall-thickness variation. This ensures the fast cycle times and stable cavity fill that the ZQ40 is capable of delivering.

Neck threads and finish are dimensioned in the injection mould to achieve 100% closure compatibility. No gate trim is required. Bottle bottoms are flash-free with excellent convex geometry for filling-line stability.

A Maharashtra-based pharmaceutical packaging facility needed to replace an EBM line that was generating unacceptable particulate contamination from gate trimming on their 10 ml and 30 ml HDPE oral liquid vials. After switching to two EP-ZQ40 machines in a 4-cavity configuration, rejection rates fell below 0.3% and the line passed their annual GMP audit without a single finding related to container cleanliness. The engineering team reported that neck-to-closure torque values were more consistent than anything achieved on the previous line.

A Seoul-based premium skincare OEM needed sub-30 ml PCTG flacons with complex ovoid cross-sections for a European retail client. Their existing supplier could not meet the 0.1 mm neck-diameter tolerance. The EP-ZQ40 — running at 6 cavities for the 30 ml format — consistently hit ±0.05 mm. The buyer quoted the output as “indistinguishable from European-made containers at less than half the tooling cost.”

A Warsaw supplement producer running PS lactic-acid bacterial drink bottles at 65 ml evaluated three IBM suppliers before selecting the EP-ZQ40 on the basis of its 22:1 screw L/D ratio — which provided the melt homogeneity needed for optically clear PS without purging downtime. Running at 8 cavities, the machine delivers their weekly volume requirement in 4.5 shifts, leaving capacity for new SKU trials.

A Monterrey-based medical diagnostics manufacturer producing LDPE reagent dropper bottles in 10 ml and 20 ml formats selected the EP-ZQ40 for its small footprint — the machine fits in a 6 m × 3 m bay within their ISO Class 8 cleanroom. The standard servo rotary indexing eliminated the positional drift they had experienced on a competitor’s chain-drive system, and the integrated control box maintained barrel zone temperatures within ±2°C throughout continuous 16-hour shifts.

مشین واک تھرو

Inside the Electrical Cabinet — EP-ZQ40 / EP-ZQ60 Injection Blow Molding Machine