Description
HGS Series Semi-Automatic Blow Molding Machine for PET Bottle Production
6 models · 500–1,200 bph · 1 L – 20 L bottle capacity · Piston-type & cylinder clamping options · Hot-fill capable (88–95 °C) · 220V/50Hz
Semi-Automatic Blow Molding Machine Overview — What It Is & Who It’s Built For
The HGS series is a range of semi-automatic PET stretch blow molding machines designed for producers who need reliable bottle output without the capital outlay of a fully automatic line. Six models cover bottle capacities from 1 L to 20 L, with output rates from 150 BPH (large-format HGS-350A) up to 1,100 BPH (HGS-150A on small bottles). All models run at 220V/50Hz and work with a separate digital infrared heating unit — the HGJ-B or HGJ-CL — which heats preforms before the operator transfers them to the blow station.
Two clamping options are available across the range: piston-type pneumatic-hydraulic linkage (气液联动) for smoother, more force-consistent mold closure, and cylinder-type (气缸) for simpler maintenance. Both meet the same output and quality targets — the choice comes down to your maintenance team’s preference and local service access.
Primary material is PET, though the machine accommodates other materials where preform compatibility allows. Target customers include small-to-mid-size bottling operations, start-up beverage factories, craft food and condiment producers, custom packaging houses, and any operation that needs to blow bottles in multiple SKUs without the changeover complexity of a high-cavitation automatic line.
How a Semi-Automatic PET Bottle Blow Molding Machine Works — Step by Step
Understanding the production cycle helps you plan staffing and throughput. Here’s how each bottle gets made on the HGS line:
The “semi” in semi-automatic refers to Step 3 — the operator manually places the heated preform into the blow mold. Everything else is pneumatically controlled: mold closure, stretching, high-pressure blowing at 3.0 MPA, cooling, and mold opening. This setup keeps the machine simple and inexpensive while still delivering consistent bottle dimensions on every cycle.
One operator can typically run one machine continuously. On the HGS-200A producing 1.25 L bottles at 500–980 BPH, that works out to roughly 8–16 bottles per minute — manageable for one person with a short transfer motion. Larger-format models like the HGS-350A (20 L, 150–400 BPH) move slower, giving the operator more time between cycles.
Why Choose a Semi Automatic Bottle Blow Molding Machine Over a Fully Automatic Line?
Fully automatic lines are the right answer when you’re running one or two bottle formats at full capacity, 24 hours a day. But a lot of operations aren’t there yet — or don’t need to be. Here’s where the semi-automatic makes more practical sense:
💰 Lower Entry Cost
The HGS-200A weighs 480 kg and has a footprint of 1,550×560×1,530 mm. It costs a fraction of a full automatic line. For a start-up or a secondary production line, the capital difference goes a long way toward working capital or mold inventory.
🔄 Easy Format Changes
One mold set per machine, swapped manually. No pitch-change mechanisms, no preform hopper calibration, no conveyor timing to reset. Changing from a 1 L to a 5 L mold takes one operator less than an hour on the HGS-250A.
📋 Simple Operation
No complex PLC recipe management. The operator loads, heats, and transfers. Cycle parameters (pressure, timing, stretching stroke) are set via basic controls. New operators reach productive speed within 1–2 shifts.
🛠️ Low Maintenance Demand
Fewer moving parts than a rotary automatic machine. The pneumatic circuit, stretching rod, and clamping unit are the main serviceable components. Standard pneumatic fittings — no proprietary parts. Your local pneumatics supplier can source replacements.
📦 Multi-Format Flexibility
Running water bottles in the morning and condiment bottles in the afternoon is practical on a semi-automatic. Custom molds for special shapes, embossed surfaces, or unusual neck finishes are straightforward to test without the risk of disrupting a high-output automatic line.
🌡️ Hot-Fill Capability
The HGS-200B model is specifically designed for heat-resistant bottles used in hot-fill beverage lines. It can produce tea drink bottles that withstand 88–95 °C — meeting the pasteurization temperature requirements for hot-fill juice, tea, and sports drink lines without a separate heat-set machine.
Semi Automatic PET Bottle Blow Molding Machine Features — What’s Inside the HGS Series
Digital IR Heating System (HGJ-B / HGJ-CL)
Separate digital infrared heating unit with 5–8 kW power draw and wall thickness output of 2.5–4.2 mm. The HGJ-B handles wide-mouth jars (130 mm max neck, 18/36 preform holders); the HGJ-CL is optimized for standard narrow-neck bottles (68 mm max neck, 96 preform holders). Both use three-phase four-wire power and process 200–2,100 preforms per hour depending on bottle size.
Dual Clamping Options
Choose between piston-type pneumatic-hydraulic (smoother force profile, better for thick-wall or complex bottles) or cylinder-type (simpler, easier to maintain). Both operate at 0.5–0.8 MPA working pressure. The mold-clamping stroke ranges from 150 mm (HGS-150A) up to 500 mm (HGS-350A) — large enough for a 20 L container mold.
High-Pressure Blow Circuit at 3.0 MPA
All HGS models blow at 3.0 MPA — sufficient to fully form complex bottle profiles and sharp shoulder transitions. Sealing stroke (40–50 mm across models) keeps the preform securely seated in the blow pin during the high-pressure cycle, preventing leakage at the neck.
Broad Mold Compatibility
Mold size range covers 100–150 mm (HGS-150A) up to 330–400 mm (HGS-350A). Pillar space from 330×220 mm to 580×390 mm. This means third-party molds for standard bottle formats — round, oval, square, handled — will typically drop straight in without requiring a custom platen.
Hot-Fill Grade Construction (HGS-200B)
The HGS-200B uses an extended heat-setting blow cycle to crystallize the PET bottle wall sufficiently for hot-fill at 88–95 °C. This meets the pasteurization requirements of tea, juice, and isotonic drink filling lines without needing a separate heat-set station. Output is 400–550 BPH at 1.25 L capacity.
Compact, Light Footprint
The smallest model (HGS-150A) weighs just 400 kg and measures 1,400×500×1,500 mm — fits through a standard industrial door. Even the large-format HGS-350A at 1,500 kg occupies only 2,270×860×1,770 mm. These machines work in converted warehouse space without requiring a purpose-built production floor.
Key Advantages of the HGS Semi-Automatic Blow Molding Machine for Small and Medium Bottle Production
Here’s a straight comparison of what you get with the HGS series versus a full automatic line — written for the operations manager, not the marketing brochure:
| Factor | HGS Semi-Automatic | Full Automatic Line |
|---|---|---|
| Initial Investment | Low — single machine unit | High — full line with conveyors, sorters, controls |
| Operators Required | 1 per machine | 1–2 per line (but higher output per labor hour) |
| Mold Changeover | <1 hour, one operator | 2–4 hours, requires trained team |
| Suitable Output Volume | 150–1,200 BPH per machine | 1,800–9,200+ BPH |
| Training Time | 1–2 shifts to productive speed | Days to weeks for full line qualification |
| Bottle Format Range | Any shape — round, oval, custom, handled | Optimized for 1–2 standard formats |
| Floor Space Required | From 1,400×500 mm (HGS-150A) | Full production bay — typically 100–300 m² |
| Hot-Fill Capable | Yes — HGS-200B (88–95 °C) | Requires specific heat-set model |
Technical Specifications of the HGS Semi-Automatic Blow Molding Machine Series
All 6 blow station models + 2 heater units. Scroll horizontally on mobile.
▸ HGS Series Blow Station Parameters
| Parameter | Unit | HGS‑150A | HGS‑200A | HGS‑250A | HGS‑280A | HGS‑350A (20L) | HGS‑200B 🌡️ |
|---|---|---|---|---|---|---|---|
| Pillar Space | mm | 330×220 | 380×210 | 380×210 | 525×370 | 580×390 | 380×210 |
| Mold Size Range | mm | 100–150 | 120–200 | 170–250 | 220–300 | 330–400 | 120–200 |
| Open Mold Stroke | mm | 150 | 200 | 250 | 280 | 500 | 200 |
| Stretching Stroke | mm | 320 | 350 | 350 | 400 | 550 | 360 |
| Sealing Stroke | mm | 40 | 40 | 50 | 50 | 50 | 40 |
| Power Voltage | V/Hz | 220V / 50Hz (all models) | |||||
| Operating Pressure | MPA | 0.5–0.7 | 0.8 (all other models) | 0.8 | 0.8 | 0.8 | 0.8 |
| Blowing Pressure | MPA | 3.0 MPA (all models) | |||||
| Output Efficiency | BPH | 500–1,100 | 500–980 | 500–980 | 500–980 | 150–400 | 400–550 🌡️ |
| Bottle Capacity | L | 1 | 1.25 | 5 | 10 | 20 | 1.25 (hot-fill) |
| Machine Size (L×W×H) | mm | 1,400×500×1,500 | 1,550×560×1,530 | 1,600×560×1,450 | 1,630×560×1,570 | 2,270×860×1,770 | 1,550×560×1,450 |
| Machine Weight | kg | 400 | 480 | 490 | 550 | 1,500 | 500 |
🌡️ HGS-200B is the hot-fill dedicated model — bottles withstand 88–95 °C filling temperature, suitable for tea drink, juice, and pasteurized beverage lines.
▸ HGJ Series Infrared Heater Parameters (used with HGS blow station)
| Parameter | Unit | HGJ-B (Wide-Mouth Jar) | HGJ-CL (Standard Bottle) |
|---|---|---|---|
| Power Supply | — | Three-phase four-wire (both models) | |
| Production Efficiency | pph | 500–1,200 | 200–2,100 |
| Using Power | kW | 5–8 (both models) | |
| Wall Thickness Output | mm | 2.5–4.2 (both models) | |
| Preform Holders | — | 18 / 36 | 96 |
| Max Neck Diameter Range | mm | 130 / 65 | 68 |
| Mold Height | mm | 160 (both models) | |
| Machine Size | mm | 1,880×720×1,200 | 1,500×600×1,100 |
| Machine Weight | kg | 400 | 250 |
Semi Automatic Blow Molding Machine Applications — Industries and Bottle Types
The HGS series runs a wider range of bottle types than most automatic lines — precisely because its semi-manual process makes it practical to change formats frequently and run short batches economically. Here’s where it’s used in practice:
Ready to Find the Right Semi-Automatic PET Blow Molding Machine for Your Line?
Tell us your bottle capacity (L), target output (BPH), and whether you need hot-fill capability — we’ll confirm which HGS model fits and send FOB pricing within 24 hours. As a semi automatic PET bottle blow molding machine manufacturer with over 20 years of export experience, we’ve shipped to 60+ countries and provide on-site commissioning for every order.
- Share your bottle drawing or sample — we’ll confirm mold compatibility
- Specify material: PET standard or hot-fill grade
- Tell us your power supply: 220V/50Hz standard, or confirm local spec
- State required daily output and number of bottle SKUs
Get a Quote & Model Recommendation →
No commitment required · 24-hour response · FOB Hangzhou or CIF your port · On-site commissioning available
Also Available from Ever-Power Industrial
