Semi-Automatic
PET Blow Molding
Machines
Lower capital investment, fast mould changeover, 220V single-phase power. From 1-litre cosmetic bottles to 20-litre water barrels — EP-HGS blow moulding machines and EP-HGJ preform heaters covering every semi-automatic PET bottle production need.
EP-HGS-200A vs EP-HGS200B — same volume, completely different machines: The EP-HGS-200A is a general-purpose standard machine. The EP-HGS200B is a hot-filling specialist rated to 88–95°C for tea beverage and pasteurisation lines only. Standard PET bottles produced on the EP-HGS-200A will deform on a hot-fill line. See the EP-HGS200B hot-fill specialist →
What Is Semi-Automatic RSBM
Manual Preform Loading — Maximum Flexibility
In a semi-automatic RSBM machine, an operator loads heated preforms into the blow station manually for each production cycle. The machine handles stretching, blowing, and bottle discharge automatically — the only manual step is preform loading. This makes semi-automatic machines significantly more capital-efficient than fully automatic lines at lower production volumes, and far more flexible for operations that run many different bottle formats across multiple SKUs.
Every EP-HGS semi-automatic machine requires a separate EP-HGJ series preform heater — the heater pre-conditions preforms to the correct blow temperature before the operator loads them into the blow station. The heater is a separate unit, not integrated into the machine body. Select EP-HGJ-B for wide-mouth jars (neck up to 130mm) or EP-HGJ-CL for standard narrow-neck bottles (neck up to 68mm).
The EP-HGS series runs on 220V single-phase power throughout — no three-phase industrial electrical connection required, regardless of machine size. This is a significant installation advantage for startups, small facilities, and operations in markets where industrial power is unavailable or expensive.
EP-HGS Blow Molding Machines
EP-HGS Semi-Automatic Blow Molding Machines
Select by your container's maximum volume. All EP-HGS machines are single-cavity, operated on 220V single-phase power, and require a separate EP-HGJ preform heater. The EP-HGS200B is the only hot-fill specialist — confirm your filling temperature before ordering.
EP-HGS150A
Entry-level semi-automatic machine — smallest footprint (1,400×500×1,500mm) and lightest weight (400 kg) in the EP-HGS series. For startup operations, sample production, and small-batch multi-SKU manufacturing up to 1 litre.
EP-HGS-200A
Standard semi-automatic machine with the widest multi-industry coverage in the EP-HGS series — cosmetic, pharmaceutical, food, beverage, and chemical applications up to 1.25 litres. NOT for hot-filling; see EP-HGS200B for that application.
EP-HGS200B
Hot-filling specialist — produces PET bottles rated to 88–95°C for tea beverage, hot-fill juice, and pasteurisation filling lines. The only hot-fill rated machine in the EP-HGS series. NOT a general-purpose machine.
EP-HGS250A
Mid-large capacity machine for 5-litre water bottles, chemical containers, and edible oil containers. The semi-automatic alternative to a fully automatic JS-2C200 line for producers below full-auto volume threshold.
EP-HGS280A
Large capacity machine for 10-litre water dispensers, industrial chemical containers, and food service packaging. Bridges the gap between the 5L EP-HGS250A and 20L EP-HGS-350A. Cannot produce 20L barrels — see EP-HGS-350A for that.
EP-HGS-350A
The largest machine in the EP-HGS series — for 20-litre (5-gallon) water barrels and large-format industrial containers. 1,500 kg machine weight. For regional water delivery operations below fully automatic JS-2C366 scale.
EP-HGJ Series — Required Companion Equipment
Preform Heaters — Required for Every EP-HGS Machine
EP-HGS semi-automatic machines do not include integrated preform heating. A separate EP-HGJ preform heater is required for every EP-HGS installation. Select the heater based solely on your bottle's neck diameter — this is the only selection criterion between the two models.
Heater Pairing Rule
→ Neck diameter above 68mm (wide-mouth jars, large-format dispensers): select EP-HGJ-B.
→ Neck diameter 68mm or below (standard narrow-neck bottles): select EP-HGJ-CL. Higher capacity, lighter, more versatile.
⚠️ Note: The EP-HGJ heater requires three-phase, four-wire power supply — different from the EP-HGS blow machine which uses single-phase 220V. Confirm your facility's electrical supply before ordering both units together. Heater output capacity must equal or exceed the blow machine's production rate to avoid bottlenecks.
Hướng dẫn lựa chọn
Semi-Automatic EP-HGS vs Fully Automatic EP-HGA — Choose by Volume
The output difference between semi-automatic and fully automatic RSBM is significant. Use the table below as a starting reference. For a machine recommendation based on your specific bottle and annual production target, contact our engineering team.
| Nhân tố | Semi-Auto EP-HGS This Series |
Fully Auto 2-Cavity EP-HGA ES Series |
Fully Auto 4-Cavity EP-HGA ES Series |
Fully Auto 6–8 Cavity EP-HGA ES Series |
|---|---|---|---|---|
| Preform Loading | Manual — operator per cycle | Fully automated | Fully automated | Fully automated |
| Output (bph) | 150–1,100 | 1,800–2,400 | 4,600–6,900 | 9,200–~12,000 |
| Annual Capacity* | 1.2M–8.8M | 14M–19M | 37M–55M | 74M–96M |
| Capital Cost | Lower | Mid | Mid-High | Cao |
| Power Supply | 220V Single-Phase | Three-Phase | Three-Phase | Three-Phase + Auto Line |
| Mould Changeover | Fast · 1.5–6 hrs | Vừa phải | Vừa phải | Requires full line stop |
| Multi-SKU Flexibility | Excellent — low changeover cost | Good | Vừa phải | Low — dedicated lines |
| Operator Required | Yes — per cycle | No | No | No |
| Phạm vi âm lượng | 1L – 20L | 200ml – 5L | 200ml – 2.5L | 200ml – 1.5L |
| Tốt nhất cho | Start-up · multi-SKU · sampling · regional | Dedicated medium-volume lines | High-volume single spec | FMCG-scale production |
*Annual capacity based on 8,000 operating hours. Actual output depends on container size, wall thickness, and cooling water temperature.
Working Process
How a Semi-Automatic EP-HGS Line Operates
A semi-automatic RSBM line consists of two separate units: the EP-HGJ preform heater and the EP-HGS blow moulding machine. The operator bridges the two units manually. Each step is fast — a trained operator typically cycles 500–1,100 preforms per hour on a 1-litre machine.
Load Preforms into EP-HGJ Heater
Preforms are loaded into the EP-HGJ preform heater's carousel. The heater's infrared lamps heat preforms as they rotate through the heating zone — reaching 95–115°C at the bottle body while the neck stays cool. The heater runs continuously throughout the production shift.
Transfer Heated Preforms to Blow Station
When a preform reaches the correct temperature, the operator removes it from the heater and loads it into the EP-HGS blow moulding machine's blow station. This is the manual step in a semi-automatic line — the operator's cycle time is the production rate-limiting factor at high speeds.
Automatic Stretch Blow Moulding Cycle
The EP-HGS machine automatically closes the mould, extends the stretch rod axially, and inflates the preform at 3.0 MPa blowing pressure to produce the finished bottle geometry. The servo-driven cycle is fully automatic — the operator does not intervene during this phase.
Hot-Fill Exception — EP-HGS200B Only
For tea beverage, hot-fill juice, or pasteurisation-line bottles (filling temperature 88–95°C), the production process requires a specific crystalline material structure achievable only on the EP-HGS200B specialist machine. Standard EP-HGS-200A bottles deform when hot-filled. Confirm your filling temperature before machine selection.
Câu hỏi thường gặp
Common Questions About EP-HGS Semi-Automatic Machines
Find the Right EP-HGS Semi-Automatic Machine
Share your bottle specification — container volume, neck diameter, material, industry application, and annual production target. Our engineering team will confirm the correct EP-HGS machine and EP-HGJ heater pairing and respond within one business day.
