4-Cavity PET Stretch Blow Moulding Machine
PET bottles for water, drinks, oil and personal care.
Built around your product
Preforms are loaded, reheated in an infrared oven and stretch-blown in a four-cavity mould. Servo stretching and air recovery reduce energy per bottle.
In extrusion blow moulding a tube of molten plastic — the parison — is captured by a mould and inflated. Stretch blow moulding reheats an injection-moulded PET preform, stretches it with a rod and blows it at high pressure, giving a strong, clear bottle. Injection blow moulding forms the neck by injection first, then blows the body, producing scrap-free containers with accurate necks.
Key features
- Servo stretching and clamping
- High-pressure air recovery
- Quick mould change
- Direct link to an air conveyor and filler
Process sequence
Plasticise
Resin is melted in the extruder, or preforms are reheated.
Form
A parison is extruded or the preform is transferred to the mould.
Blow
Compressed air inflates the plastic against the cooled mould.
Cool & eject
The container sets, the mould opens and the part is removed.
Trim & test
Flash is removed and bottles are leak-tested and coded.
Machine video
A closer look at a typical blow moulding installation. Ask us for a live demonstration of the BM-S4 on your own product.
Specifications
| Model | BM-S4 |
|---|---|
| Process | Two-stage reheat stretch blow moulding |
| Max container volume | 2 L |
| Cavities | 4 |
| Output | Up to 6,000 bottles/hour (500 ml) |
| Clamping force | 300 kN |
| Extruder / preform | Preform neck 18–38 mm |
| Installed power | 50 kW |
| Air supply | 3 m³/min at 30–40 bar |
Typical configuration. Final values depend on your product and are confirmed in the quotation.
Add-ons
- Parison wall-thickness control
- In-mould labelling
- Inline leak tester
- Laser coder for mould and date marking
Suitable materials and packs
Questions
Which process suits which bottle?
How are blown bottles coded?
What utilities are needed?
Get a proposal for this machine
- Application review by an engineer — material, code and line speed
- Trial marking, printing or packing on your own samples
- Quotation with layout, lead time, installation and service
Prefer to talk? Email info@motionworksrobotics.com or call +91 98100 93680.
Ask about this machine
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