Description
Two-Step Automatic Stretch Blow Molding Machine · RSBM · 4 Cavity · High Output
EP-HGA.AS-4C76.2 Automatic Blow Molding Machine
A 4-cavity precision automatic PET and PETG stretch blow molding machine delivering up to 4,000 bottles per hour for cosmetic and pharmaceutical containers up to 500ml. The half-preblowing AS architecture ensures exceptional wall-thickness uniformity across all four cavities simultaneously — setting a measurably higher quality standard than direct-blow alternatives at comparable output levels.
Machine Overview
The EP-HGA.AS-4C76.2 represents the 4-cavity variant of Ever Power’s precision AS-series automatic reheat stretch blow molding (RSBM) range — designed specifically for manufacturers who require both elevated throughput and uncompromising bottle quality in the sub-500ml container segment. At 4,000 bottles per hour theoretical output across four simultaneous cavities, this machine doubles production capacity compared to its 2-cavity AS-series sibling while preserving every quality advantage of the half-preblowing architecture.
The key engineering distinction between the EP-HGA.AS-4C76.2 and standard 4-cavity ES machines of comparable output lies in the AS-series’ controlled intermediate expansion stage. Before the final high-pressure blow at 35 kg/cm², the preform undergoes a partial expansion in a precision-tooled pre-blow cavity. This controlled intermediate state allows the polymer chain orientation to initiate from a more consistent thermal and mechanical starting point, producing wall thickness variation below 0.1mm across the container body — a figure that conventional direct-blow machines cannot match at 4-cavity production speeds.
Equipped with internationally sourced servo motors, precision reducers, and digital PLC-based control systems, the EP-HGA.AS-4C76.2 operates reliably in continuous 24-hour production environments. The machine’s 76.2mm blow mold close distance is calibrated for small-diameter containers — the 76 series designation indicating its optimisation for cosmetic dropper bottles, pharmaceutical syrups, and small personal care containers where precision is paramount. For a broader understanding of the RSBM process and how AS compares to ES machines, visit our RSBM machine category page.
AS-Series vs. ES-Series: Which Is Right for Your Bottle?
Buyers comparing the EP-HGA.AS-4C76.2 against standard ES-series 4-cavity machines should evaluate based on container geometry and quality requirements rather than price alone.
| Evaluation Factor | AS-Series (This Machine) | ES-Series |
|---|---|---|
| Wall Thickness Uniformity | Superior (half-preblow) | Standard (direct blow) |
| Best For | Narrow-neck, precision containers | Standard geometry, higher volume |
| Rejection Rate (typical) | Below 0.5% | 0.5–1.5% |
| Optical Clarity (PETG) | Excellent | Good |
| Recommended Applications | Pharma, premium cosmetics, eye-drops | Daily chemical, food, standard cosmetics |
Core Technical Features
4-Cavity Precision Half-Preblowing
All four cavities operate through the same controlled half-preblow sequence simultaneously, ensuring cavity-to-cavity consistency across the full production run. Weight variation between cavities is typically maintained within ±1g for containers in the 100–500ml range.
4,000 bph Theoretical Throughput
At four cavities per cycle, the EP-HGA.AS-4C76.2 delivers twice the output of the 2-cavity AS model while maintaining the same quality parameters. For cosmetic manufacturers producing multiple SKUs at 500ml or below, this output level is typically sufficient for a dedicated single-SKU production line.
76.2mm Blow Mold Close Distance
The 76.2mm mold-close specification defines this machine’s optimisation for small-diameter containers. The 65mm maximum container diameter and 250mm maximum height parameters align precisely with the dimensional envelope required for dropper bottles, 100–200ml cosmetic flacons, and small pharmaceutical syrups.
Digital Control System
The machine’s PLC-based digital control system stores multiple production recipes, enabling rapid changeover between bottle SKUs without manual parameter re-entry. Temperature, pressure, timing, and stretch sequences are all digitally managed and logged, supporting production traceability requirements in regulated industries.
Energy-Efficient Servo Architecture
The servo-driven mechanical system consumes significantly less energy than hydraulic-primary alternatives of comparable output. At 33kW maximum heating power and a common running power well below peak, the EP-HGA.AS-4C76.2 offers a favourable cost-per-bottle energy figure across extended production runs.
Compact Footprint for 4-Cavity Output
At 3370 × 1850 × 2100mm, the EP-HGA.AS-4C76.2 delivers 4-cavity precision output within a footprint that is practical for facilities where floor space is constrained. The 4,000kg machine weight is within the structural loading capacity of most standard industrial floors without reinforcement.
Technical Specifications
| Molding Group — EP-HGA.AS-4C76.2 | ||
|---|---|---|
| Parameter | Unit | Value |
| Clamping Stroke | mm | 100 |
| Mold-Open Distance | mm | 280 |
| Mold-Close Distance | mm | 180 |
| Stretching Stroke | mm | 350 |
| Mold-Open Distance (Blow) | mm | 50 |
| Mold-Close Distance (Blow) | mm | 76.2 |
| Preform Holder | — | 96 |
| Cavities | — | 4 |
| Container Specifications | ||
|---|---|---|
| Parameter | Unit | Value |
| Max. Container Volume | ml | 500 |
| Max. Neck Diameter Range | mm | 48 |
| Max. Container Diameter | mm | 65 |
| Max. Container Height | mm | 250 |
| Theoretical Output | bph | 4,000 |
| Electrical, Air & Cooling Systems | ||
|---|---|---|
| Parameter | Unit | Value |
| Max. Heating Power | kW | 33 |
| Common Heating Power | kW | 17 |
| Operating Pressure | kg/cm² | 7 |
| Low Pressure Air Consumption | L/min | 600 |
| Blowing Pressure | kg/cm² | 35 |
| High Pressure Air Consumption | L/min | 4,000 |
| Cooling Water Temperature | °C | 8–10 |
| Cooling Water Flow Rate | L/min | 40 |
| Machine Size (L×W×H) | mm | 3370 × 1850 × 2100 |
| Machine Weight | kg | 4,000 |
Industry Applications
The 4-cavity output level of the EP-HGA.AS-4C76.2 makes it deployable as a dedicated production machine for single-SKU lines, or as a multi-SKU line with recipe-based changeover for smaller cosmetic and pharmaceutical manufacturers.
Pharmaceutical Small-Format Bottles
Syrup bottles (60–200ml), vitamin supplement bottles, small dropper containers, and nasal spray bottles. The narrow-neck optimisation and precision wall uniformity of the AS structure are directly aligned with pharmaceutical container specifications.
Premium Cosmetic Flacons
Toner bottles, serum flacons, face mist bottles, and essence dispensers in the 30–500ml range for mid-to-premium cosmetic brands. The 4-cavity output is sufficient for dedicated production of a single cosmetic SKU at typical cosmetic brand volumes.
Customer Case Studies
Philippines — Personal Care OEM
★★★★★
Application: 120ml and 250ml PETG toner and serum bottles for three regional cosmetic brands manufactured under OEM contract.
Problem solved: The OEM facility needed a single machine that could run three different bottle geometries across two substrates (PET and PETG) with recipe-based changeover under two hours. The AS-4C76.2’s digital recipe storage and consistent AS-structure performance across both substrates met the requirement, eliminating the need for a second machine in their facility.
“Three brands, two materials, one machine. The changeover is clean and the quality is consistent across every SKU. For an OEM operation, that reliability is everything.”
Indonesia — Pharmaceutical Manufacturer
★★★★★
Application: 100ml PET syrup bottles with 28mm child-resistant neck finish for a BPOM-registered pharmaceutical product line.
Problem solved: The facility required documentation of cavity-to-cavity weight variation as part of their BPOM manufacturing compliance. The AS-4C76.2 consistently produced data showing less than 0.8g variation across all four cavities — within the BPOM-acceptable range — allowing the manufacturer to include actual machine data in their regulatory submission.
“Having real production data showing cavity consistency below 1g was a key part of our regulatory documentation. The machine delivers that consistency every shift.”
Thailand — Skincare Brand
★★★★★
Application: 200ml and 400ml PETG essence and lotion bottles for a growing Thai skincare brand targeting both domestic and export markets in ASEAN.
Problem solved: The brand’s export retail channel required glass-comparable bottle clarity for shelf appeal in duty-free retail. Previous PET equipment produced bottles with a faint body haze visible under fluorescent retail lighting. The AS-4C76.2’s half-preblowing sequence on PETG eliminated the haze entirely, passing the retail buyer’s visual clarity standard on first submission.
“Our duty-free retail buyer had rejected two previous bottle samples for clarity. The first sample from this machine was approved without revision. We had not expected that.”
Frequently Asked Questions
Discuss the EP-HGA.AS-4C76.2 for Your Production Line
Whether you are establishing a new production line or upgrading existing RSBM capacity, our engineering team is available to assess your container requirements, confirm machine compatibility, and provide full technical documentation for your procurement process.
