Reheat Stretch Blow
Molding Machines
— Two-Step RSBM
Preform-in, finished bottle out. EP-HGA fully automatic series and EP-HGS semi-automatic series — covering every major PET bottle application from 200 ml cosmetic flacons to 20-litre water barrels. From 200 ml cosmetic flacons to 20-litre water barrels. Servo-driven, CE certified, factory direct.
What Is Two-Step RSBM
Two Steps — Preform First, Blow Second
Reheat Stretch Blow Moulding (RSBM) is a two-step process: PET preforms are manufactured separately, then reheated and stretch-blown into finished bottles. This separation of injection from blow moulding is what makes RSBM the dominant technology for high-volume PET bottle production worldwide. The EP-HGA automatic series drives the preform through multi-zone infrared heating and into the blow station without any hand contact, producing bottles at up to approximately 12,000 per hour from a single machine.
Compared to one-step ISBM, RSBM separates preform production from blow moulding, enabling preform inventory management, higher cavity counts at equivalent machine size, and the widest possible container volume range — from 200 ml cosmetic flacons to 20-litre water barrels — across a single product family. For applications requiring biaxial orientation in a single continuous process without preform storage, see our one-step ISBM machine range.
The EP-HGA series covers every major PET bottle application across six industries: cosmetic and daily chemical, food and wide-mouth jars, water and beverage, pharmaceutical, edible oil and handle bottles, and chemical and pesticide. The FS series adds wide-mouth jar capability for protein powder jars, baby bottles and PP bottles that standard ES series neck dimensions cannot accommodate.
Machine Categories
Fully Automatic & Semi-Automatic — Two RSBM Production Platforms
The EP-HGA fully automatic series is for high-volume dedicated production lines where preform loading, heating and blowing are fully automated without operator intervention. The EP-HGS semi-automatic series is for small-batch, multi-SKU, and start-up operations where investment flexibility and fast changeover matter more than maximum throughput.
Fully Automatic RSBM Machines
Zero hand-contact production cycle from preform feed to bottle discharge. 1 to 8 cavities, 200 ml to 20 litres. Servo-driven, digital PLC, multi-zone infrared heating. Covering cosmetic, food, water, pharmaceutical, edible oil and chemical packaging across 28 models.
- Cosmetic & Daily Chemical200 ml – 2.5 L›
- Food & Wide-Mouth Jars1.5 L – 5 L›
- Vatten och dryck200 ml – 5 L›
- Pharmaceutical & Medicine200 ml – 1 L›
- Edible Oil & Handle Bottles3 L – 20 L›
- Baby Bottle & PP Bottle1.5 L – 5 L›
- Special-Shaped & Craft200 ml – 5 L›
- Chemical & Pesticide200 ml – 5 L›
- Large Capacity Barrels5 L – 20 L›
Semi-Automatic RSBM Machines
Manual preform loading per cycle. Lower capital cost, fast mould changeover — suited to small-batch, multi-SKU and start-up production where the annual volume does not yet justify fully automatic investment. 1 litre to 20-litre barrel range. Single-phase 220V throughout.
- EP-HGS150A1 L · 500–1,100 bph›
- EP-HGS-200A1.25 L · 500–980 bph · General Purpose›
- EP-HGS250A5 L · 500–980 bph›
- EP-HGS280A10 L · 500–980 bph›
- EP-HGS-350A20 L · 150–400 bph · Water Barrel›
- EP-HGS200B1.25 L · 88–95°C Hot-Fill Specialist›
Fully Automatic — EP-HGA Series
Fully Automatic RSBM Machines — Browse by Application
All EP-HGA fully automatic machines share the same servo drive platform, multi-zone digital PLC heating, and zero hand-contact production cycle. Select your application below to browse machines — or contact our engineering team for a model recommendation.
Industritillämpningar
Browse Fully Automatic Machines by Industry
The EP-HGA fully automatic RSBM series covers the major packaging industries from a single machine platform. Select by application to see the models recommended for your specific container type. For a full selection assessment based on your bottle drawing, contact our engineering team.
Cosmetic & Daily Chemical
Shampoo, body wash, conditioner, lotion, liquid soap — standard round and oval container formats from 200 ml to 2,500 ml. The ES series covers the full cosmetic and daily chemical container range across 2, 3, 4, and 6 cavity configurations.
Food & Wide-Mouth Jars
Condiment jars, sauce bottles, preserve containers, protein powder jars and bulk food packaging. The FS series covers wide-mouth neck diameters beyond the ES series envelope — from 130 mm to 220 mm blow mold-close — for wide-mouth food containers up to 5 litres.
Vatten och dryck
Mineral water bottles, juice bottles, beverage containers — from 300 ml single-serve to 5-litre household water formats. The ES-8C76 at approximately 12,000 bph is the highest-output single machine in the ES series for FMCG-scale water and beverage production.
Pharmaceutical & Medicine
Oral liquid bottles, syrup containers, vitamin supplements and medicine packaging — zero hand-contact production meeting pharmaceutical hygiene requirements. The AS series and smaller ES cavity configurations serve this sector with the precision and hygiene standards required.
Edible Oil & Handle Bottles
Cooking oil bottles with integrated handles — the dominant consumer edible oil format globally. The JS-2CB152 is the only handle-bottle specialist in the entire HGA automatic series. Integrated blown handles provide superior structural integrity versus snap-on insert alternatives. Also covers 20-litre edible oil barrels.
Chemical & Pesticide
Agrochemical bottles, industrial cleaning chemical containers, pesticide and herbicide packaging — from 250 ml narrow-format to 20-litre industrial drums. PET and PETG provide chemical resistance and transparency for level-checking without container opening.
Baby Bottles, PP Bottles & Special-Shaped Containers
Wide-mouth baby bottles, PP bottles, and special-shaped craft containers require the FS series wide-mouth platform with blow mold-close dimensions from 130 mm to 220 mm — the neck diameter range that ES series configurations cannot accommodate.
Semi-Automatic Machines
EP-HGS Semi-Automatic Series — Flexible Production for Every Scale
Semi-automatic RSBM for small-batch, multi-SKU, start-up, and sample production. Lower capital cost, 220V single-phase power, fast mould changeover. From 1-litre cosmetic bottles to 20-litre water barrels. Each HGS machine requires a separate EP-HGJ series preform heater.
Technology Comparison
One-Step ISBM vs Two-Step RSBM — Which Process Is Right for You?
Both processes produce PET bottles. The difference is whether injection moulding and blow moulding happen in one integrated machine or two separate steps. The right choice depends on your container geometry, annual volume, product quality requirements, and capital budget.
| Faktor | One-Step ISBM Injection Stretch Blow Moulding |
Tvåstegs RSBM Reheat Stretch Blow Moulding |
|---|---|---|
| Process Steps | Injection + stretch + blow in one machine. Preform not stored. | Preform injection separate. Preform reheated then blown. Two distinct steps. |
| Preform Storage | No preform storage — preform goes direct to blow station | Preforms stored and sourced independently — decoupled scheduling |
| Behållarvolym | Typically up to 2 litres; specialist machines up to 5 L | 200 ml to 20 litres — widest range in the industry |
| Container Neck | Narrow and wide-mouth. Very wide-mouth (baby bottle, PP jar) — ISBM advantage | Standard narrow-neck (ES series) and wide-mouth (FS series) up to 220 mm mold-close |
| Cavity Count | 1 to 12 cavities; limited by injection moulding clamping force | 1 to 8 cavities (ES series); up to 2 cavities wide-mouth (FS series) |
| Output (bph) | 1,500 – 10,000+ bph depending on cavity count | 2,000 – ~12,000 bph (auto); 150–1,100 bph (semi-auto) |
| Material Orientation | Biaxial molecular orientation from a warm preform — consistent material properties | Biaxial orientation from reheated preform — excellent for high-volume standard bottles |
| Special-Shaped Bottles | Strong advantage — complex shapes, undercut features, asymmetric geometry | Standard round and oval geometries. Custom shapes possible but more limited. |
| Preform Sourcing | Own preform injection — full control, no external supplier dependency | Purchase preforms from specialist suppliers — or inject in-house separately |
| Capital Cost | Higher per unit — integrated injection + blow system | Lower entry point — especially semi-auto HGS series from 220V single-phase |
| Floor Space | Compact — one machine, one footprint | Two stations (heater + blow machine) for semi-auto; integrated for full-auto |
| Resin Compatibility | PET, PP, PC — PP and PC are ISBM advantages not achievable on standard RSBM | PET, PETG — broadest PET container range |
| Ideal Application | Baby bottles (PP), wide-mouth PP jars, complex-shaped bottles, pharmaceutical packaging requiring one-step hygiene | High-volume PET water, beverage, cosmetic, chemical, food — where output and volume range matter most |
| Ever Power Series | EP-HGY Series — 1 to 12 cavity, 6 models | EP-HGA (auto) + EP-HGS (semi-auto) — 36 models total |
Quick Selection Guide
Choose ISBM (EP-HGY) when: producing PP or PC bottles, complex/special-shaped containers, baby bottles, wide-mouth PP jars, or where one-step hygiene is required.
Choose RSBM (EP-HGA / EP-HGS) when: producing standard PET bottles at high volume, the widest container volume range (200 ml – 20 L), lowest per-bottle cost at scale, or starting with semi-automatic investment.
Working Principle
Two-Step RSBM — From Preform to Finished Bottle
The two-step RSBM process separates preform manufacture from blow moulding, enabling high cavity counts, flexible preform sourcing, and the widest container volume range in the blow moulding industry.
Preform Manufacture
PET preforms are injection-moulded separately — either in-house or from a preform supplier. The preform encodes the bottle's neck finish, thread geometry, and material weight. Preform inventory enables decoupled production scheduling and flexible volume management.
Preform Feeding & Sorting
Preforms are automatically sorted, oriented and fed into the EP-HGA machine's heating zone via automated preform sorter and feeder — standard for all ES 6-cavity and 8-cavity configurations. Fully automatic — no manual preform handling once the hopper is loaded.
Multi-Zone Infrared Heating
Preforms pass through the digital PLC-controlled multi-zone infrared heating array. Zone-by-zone temperature calibration achieves the correct temperature gradient from neck to base — the prerequisite for uniform wall thickness distribution in the blow station.
Stretch Blow Moulding & Discharge
The servo-driven stretch rod extends the preform axially while blow air at 35 kg/cm² (3.43 MPa) expands it radially in the mould cavity. Biaxial molecular orientation improves compression resistance, gas barrier and optical clarity. Finished bottles discharge automatically.
Selection Guide
Fully Automatic vs Semi-Automatic
The output difference between fully automatic and semi-automatic RSBM is significant. Use the table below as a starting point — then talk to our engineering team for a precise machine recommendation based on your bottle specification and annual production target.
| Faktor | Semi-Auto HGS Series | Fully Auto 2-Cavity (ES) | Fully Auto 4-Cavity (ES) | Fully Auto 6-8 Cavity (ES) |
|---|---|---|---|---|
| Preform Loading | Manual per cycle | Fully automated | Fully automated | Fully automated |
| Typical Output (bph) | 150–1,100 | 1,800–2,400 | 4,600–6,900 | 9,200–~12,000 |
| Annual Capacity (8,000 hrs) | 1.2M–8.8M | 14M–19M | 37M–55M | 74M–96M |
| Capital Cost | Lägre | Mid | Mid-High | Hög |
| Mould Changeover | Fast (1.5–6 hrs) | Moderate | Moderate | Requires line stop |
| Power Supply | 220V Single-Phase | Three-Phase | Three-Phase | Three-Phase + Auto Line |
| Bäst för | Start-up, multi-SKU, sampling | Dedicated lines, moderate volume | High-volume single SKU | FMCG-scale production |
Output figures are indicative at typical container sizes. Actual output depends on container geometry, wall thickness, and cooling water temperature.
Find the Right RSBM Machine for Your Bottle
Share your bottle specification — container volume, body diameter, neck diameter, material, required output and destination country — and our engineering team will respond within one business day with a machine recommendation and indicative pricing.
