EP-HGS250A 5L Semi Automatic Blow Molding Machine
The EP-HGS250A Semi Automatic Blow Molding Machine is a robust 5L PET bottle production solution featuring a pneumatic-hydraulic linkage mold clamping system. Designed for large-container manufacturing, it accommodates bottle sizes from 170mm to 250mm with a stretching stroke of 350mm. Equipped with digital infrared heating, the machine ensures uniform preform temperature for superior bottle clarity and strength. Operating at a working pressure of 0.8MPa and a blowing pressure of 3.0MPa, it achieves a production efficiency of 500-980 bottles per hour. With a footprint of 1600×560×1450mm and a weight of 490kg, the HGS250A is ideal for small-to-medium scale beverage and industrial packaging, offering reliable performance and flexibility for various large-bottle designs.
EP-HGS250A 5L Semi Automatic Blow Molding Machine
Engineered for mid-to-large container production, the EP-HGS250A is a purpose-built semi automatic blow molding machine covering the 5-liter bottle segment. Built on the proven HGS series platform, this machine uses a piston-type pneumatic hydraulic linkage mechanism paired with a digital infrared heating unit, giving operators precise control over preform temperature profiles across the full stretch-blow cycle. Whether your production targets edible oil containers, large-format water jugs, household cleaning bottles, or bulk liquid packaging for industrial use, the HGS250A delivers wall-thickness uniformity and dimensional accuracy that reduce downstream rejection rates. As a semi auto blow moulding machine positioned between entry-level units and high-speed automatic lines, it serves manufacturers in Colombia, Latin America, and export markets globally who require reliable output at a practical capital investment.
Technical Specifications — EP-HGS250A Semi Automatic Blow Molding Machine
The table below presents verified factory specifications for the HGS250A model. These parameters define the working envelope of the machine and should be cross-referenced with your preform dimensions and target bottle geometry before confirming tooling orders. The 380 × 210 mm pillar space and 170–250 mm mold size range accommodate a broad variety of 5-liter container profiles, from standard cylindrical oil bottles to contoured hand-grip designs used in the Colombian and broader Latin American retail market. This semi automatic blow moulding machine is designed to run continuous shifts without performance degradation under the specified operating conditions.
| Semi Automatic Blow
Molding Machine Parameter |
Unité | EP-HGS250A Semi Automatic
Blow Molding Machine |
|---|---|---|
| Pillar Space | mm | 380 × 210 |
| Mold Size | mm | 170–250 |
| Open Mold Stroke | mm | 250 |
| Stretching Stroke | mm | 350 |
| Sealing Stroke | mm | 50 |
| Power Voltage | V/Hz | 220V / 50HZ |
| Operating Pressure | MPA | 0.8 |
| Blowing Pressure | MPA | 3.0 |
| Efficiency | bph | 500–980 |
| Bottle Capacity | L | 5 |
| Machine Size (L×W×H) | mm | 1600 × 560 × 1450 |
| Poids de la machine | kg | 490 |
Heater Parameters
| Paramètre | Unité | HGJ-B (Wide-mouth Jar) | HGJ-CL |
|---|---|---|---|
| Power Supply | 3-Phase 4-Wire | 3-Phase 4-Wire | |
| Efficiency | bhp | 500–1200 pcs | 200–2100 pcs |
| Using Power | kW | 5–8 | 5–8 |
| Mold Wall Thickness | mm | 2.5–4.2 | 2.5–4.2 |
| Preform Holder | 18 / 36 | 96 | |
| Neck Diameter Range | mm | 130 / 65 | 68 |
| Mold Height | mm | 160 | 160 |
| Machine Size (L×W×H) | mm | 1880 × 720 × 1200 | 1500 × 600 × 1100 |
| Poids de la machine | kg | 400 | 250 |
Core Advantages of the EP-HGS250A Semi Automatic Blow Molding Machine
Extended Stretching Stroke for 5L Containers
A 350 mm stretching stroke is specifically calibrated for the axial extension demands of 5-liter PET containers, which require a greater rod travel distance than smaller bottle formats. Insufficient stretching stroke is one of the most common causes of premature base failure and sidewall thinning in large containers — issues the HGS250A semi automatic blow molding machine is engineered to eliminate. Combined with a 50 mm sealing stroke that firmly closes the neck finish without over-compressing the preform gate, the machine produces containers with consistent base geometry and low stress concentration at the heel, a critical quality criterion for edible oil and liquid detergent packaging on any semi automatic pet blow molding machine platform.
Dual Mold-Locking Configuration
The HGS series gives operators the ability to select between pneumatic hydraulic linkage and cylinder hinge mold locking, depending on the clamping force required for a given container wall thickness and blowing pressure. At 3.0 MPA blowing pressure — the rated maximum for this semi automatic blow molding machine — the selected mold-locking system maintains parting-line integrity throughout the full production shift. Flash formation at the bottle seam is a direct indicator of insufficient clamp force or worn platen surfaces; the HGS250A semi automatic blow molding machine's dual-mode locking system provides headroom to increase effective clamping force when processing stiffer materials such as PCTG or PC without reconfiguring the main press assembly.
Infrared Preform Heating with Zone Control
The accompanying digital infrared heating unit provides independent zone control across multiple lamp banks, allowing operators to dial in a temperature gradient that compensates for the thick gate area and relatively thin sidewall of a 5-liter preform. Correct zonal heating prevents cold spots that cause haze or stress whitening in the blown bottle, while eliminating overheating that leads to crystallisation and opacity in the shoulder zone. For Colombian bottlers processing a range of preform weights from a single heating station, the zone-adjustable system provides the flexibility to switch between container profiles with minimal downtime on their semi automatic blowing machine operation.
Multi-Material Processing Capability
PET, PETG, PC, PCTG, and PP are all processable on the EP-HGS250A with appropriate preform selection and mold design. For large-format containers in the food, agrochemical, and household goods sectors, material choice directly impacts stacking strength, UV clarity, and chemical resistance — properties that vary significantly between these polymer families. The machine's operating pressure range and heater system are validated to condition each material type to its optimal blow temperature, making the HGS250A one of the more versatile platforms in the semi auto molding machine segment for 5-liter applications.
How to Choose the Right Semi Automatic Blow Molding Machine for 5L Production
When evaluating a semi automatic blow moulding machine for 5-liter containers, the starting point is the container drawing, not the machine catalogue. Confirm that the pillar space (380 × 210 mm on the HGS250A) can physically clear your mold width with adequate safety margin, and verify that your target bottle height falls within the stretching stroke of 350 mm. Bottle height exceeding the effective stretch rod travel is a common commissioning problem that cannot be resolved after tooling is manufactured.
Output rate is the second decision factor. At 500–980 bottles per hour, the HGS250A suits operations filling between 2,500 and 5,000 liters of product per hour when running at full output — a throughput range that aligns with medium-capacity filling lines common in the Colombian bottled water, edible oil, and agrochemical distribution sector. If your filling line capacity significantly exceeds this, a multi-cavity automatic machine may be more appropriate, but for most single-SKU 5-liter operations, the semi-automatic platform matches production demand without the capital cost or complexity of full automation.
Preform sourcing also matters. The HGS250A semi automatic blow molding machine accepts preforms with neck diameters that fall within the heater model's neck diameter range — up to 65 mm for the HGJ-CL configuration — so confirm your preform neck finish before selecting the heater model. Operators in South America typically source preforms locally or from regional resin processors; sharing your preform specification sheet with our technical team before finalising the order allows us to confirm tooling compatibility and recommend any adjustment to the stretching rod profile for your specific bottle design on this semi automatic pet blowing machine.
Semi Automatic Blow Molding Machine Mold Engineering
Preform Injection Mold
The die lip is split into two independent sections, which work together to maintain strict coaxiality throughout the preform formation process — a geometry that becomes especially critical when producing the longer, heavier preforms needed for 5-liter bottles. Cooling water channels are routed to maximise heat extraction from the preform body, shortening the conditioning cycle without introducing thermal gradients that would compromise subsequent blow quality. All cavity-forming components are machined from imported 2316 die steel, selected for its corrosion resistance and stable dimensional response to heat treatment cycles. The core plate, cavity plate, and associated structural elements are produced from 420 stainless steel, providing long-term resistance to moisture and mild process chemicals. The assembly is designed around standardised, interchangeable die fittings, and a single mold set can accommodate more than one preform specification, which reduces tooling investment when running multiple SKUs.
Blowing Mold
Each blowing mold body is produced from high-grade tool steel selected for its hardness, wear resistance, and machinability — properties that determine how well the mold surface holds its finish over millions of production cycles. The 3D bottle cavity is developed using professional CAD software, allowing complex handle recesses, grip panels, label areas, and base geometries to be precisely realised before any cutting begins. A catalogue of proven 5-liter bottle profiles is available for standard projects, with custom geometry supported through our in-house design process. The water cooling circuit inside the mold body is engineered for even temperature distribution across the full cavity surface, reducing cycle time while maintaining consistent wall crystallinity in every container. All metal components are finished on CNC machining centres, ensuring the dimensional tolerances and surface quality required for repeatable, high-quality blow moulding at 3.0 MPA.
Application Scenarios of Semi Automatic Blow Molding Machine
The 5-liter format produced on the EP-HGS250A semi automatic molding machine is among the most commercially significant container sizes across multiple industries. The applications below represent the core use cases where this machine delivers measurable production and quality advantages.
🛢️ Edible Oil Containers
5-liter PET bottles for cooking oil require thick base geometry and UV stabilisation. The HGS250A semi automatic blow molding machine's 350 mm stretching stroke and zone-controlled heating produce base-heavy containers with the structural integrity to withstand stacking loads during warehouse storage and retail distribution in the Colombian grocery market.
💧 Large-Format Drinking Water
Bulk water packaging in 5-liter format is one of the fastest-growing segments in Latin America. This semi automatic pet blow moulding machine produces clear, lightweight PET bottles at 500–980 bph, supporting small and mid-scale water bottling operations without the capital overhead of a fully automatic line.
🧴 Liquid Detergent & Cleaners
Household and industrial cleaning products packaged in 5-liter PCTG or PP containers benefit from the HGS250A semi automatic blow molding machine's compatibility with chemically resistant materials. Ergonomic handle recesses and pour-spout designs can be incorporated into the blowing mold geometry to meet retail requirements.
🌾 Agrochemical Packaging
Fertiliser solutions, pesticide concentrates, and foliar nutrients for the Colombian and South American agricultural sector require robust, chemically stable containers. PC and PCTG materials processed on this semi auto blow moulding machine meet the barrier and structural demands of agrochemical distribution channels.
🧪 Industrial & Chemical Fluids
Lubricants, solvents, and industrial fluid concentrates packaged in bulk PET or PP require tight dimensional control at the neck finish to ensure cap torque consistency on high-speed filling lines. The machine's sealing stroke precision delivers the neck-finish geometry that automated capping equipment requires.
🍼 Food & Beverage Bulk Packs
Fruit juice, drinking vinegar, soy sauce, and other food liquids sold in 5-liter family packs rely on food-contact grade PET processed under controlled temperature conditions. The HGS250A's zone-adjustable heater ensures that thermal history across the preform is consistent and meets food-safety processing requirements.
Machine Structure & Engineering Build
The main frame of the EP-HGS250A semi automatic blow molding machine is welded from heavy-section structural steel and then stress-relieved before machining, which eliminates the dimensional drift that occurs over time in frames that are machined directly after welding. This process-level detail matters because the parallelism of the platen surfaces and the perpendicularity of the tie rods directly affect mold-closing consistency across every cycle — a fact that distinguishes purpose-built semi automatic PET stretch blow moulding machine platforms from lower-cost alternatives where frame rigidity is often the first cost-reduction target.
The pneumatic circuit uses dedicated pressure regulators for the control line (0.8 MPA) and the blowing line (3.0 MPA), preventing cross-contamination of the two circuits during the high-pressure blowing phase. The two-speed mold closing — fast approach, slow final closure — reduces impact loads on the mold parting line and extends mold service life between re-polishing cycles.
Partner Brands
With over two decades of dedicated research and development, our team has accumulated deep expertise in the manufacturing, operation, and lifecycle management of blow molding equipment. Our production systems are continuously refined, and we hold multiple national patents covering key mechanical and thermal innovations within the HGS semi automatic moulding machine platform. We have developed tailored solutions for packaging PET, PETG, PC, PCTG, and PP materials across cosmetics, water, oil, beverages, food packaging, pharmaceutical, and baby product categories. Our client base includes internationally recognised brands — Yibao, Haitian, Luhua, Walch, Blue Moon, Proya, Libai, Estée Lauder, Walmart, Da Senlin, and Shining Eye Drops — and spans markets across Asia, Europe, Latin America, and Oceania.
À propos de nous
Our production facility specialises exclusively in blow moulding equipment, giving our engineering and after-sales teams the focused domain knowledge that multi-product factories cannot replicate. The HGS series represents the culmination of more than twenty years of iterative design improvements driven by real-world feedback from production sites across four continents. Every machine that leaves our facility has completed a full-pressure functional test — including verification of the mold-locking force, blowing pressure stability, and heating zone response — before crating for export.
Our goal is straightforward: every semi automatic blow molding machine we supply should reach its rated output within the first week of commissioning and maintain that performance for the full service life of the equipment.
Atelier
Compatible Auxiliary Equipment
Optimising a semi automatic pet blow molding machine installation goes beyond the blow moulding unit itself. The following auxiliary equipment is either manufactured by us or sourced from vetted suppliers, and each item is validated for compatibility with the HGS250A's pneumatic, thermal, and mechanical operating parameters.
Air Compressor
Oil-free high-pressure compressors rated for sustained 3.0 MPA delivery. For 5-liter container production at up to 980 bph, correctly sized compressor capacity prevents the mid-cycle pressure drops that cause bottle short-shots and base failures, protecting yield rates on your semi automatic blowing machine line.
Contrôleur de température du moule
Maintains mold cavity surface temperature within ±1°C across multi-hour production runs. For 5-liter containers where wall-thickness variation between the shoulder and base is a common quality concern, consistent mold temperature is as important as preform heating uniformity in achieving a controlled crystallinity profile.
Bottle Visual Inspection Machine
Automated vision systems positioned downstream of the blow station detect wall-thickness deviations, neck finish irregularities, and surface contamination before containers reach the filling line. Essential for pharmaceutical and food-grade production where container defects carry regulatory and liability implications.
Chiller & Compressor Package
Combined chiller and compressor packages are available for installations where a single utility skid is preferred over separate equipment. The chiller supports mold cooling circuit requirements, while the compressor provides both control and blowing air from a single unit, simplifying electrical load planning for new factory fit-outs.
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Éditeur : PXY
