Most lines are bought around one product, then asked to make many. A three head HDPE blow molding machine solves that by delivering three parisons per cycle across a 5 ml to 10 L volume window locked to a single platform. On a three head HDPE blow molding machine, the extruder keeps the accumulator full and the head cluster drops matched parisons, so small droppers and medium bottles run at the same cadence without a tooling change beyond the mould itself. This is what makes a three head HDPE blow molding machine so flexible for a job shop that quotes across several markets.
Volume range matters because the same machine can be quoted for a medical mini-bottle today and a household 10 L container tomorrow, and the controller stores the difference as a recalled recipe rather than a re-setup. Changeover becomes a mould swap and a button press, not an afternoon of dial tuning.
Head Count and Volume Range
The relationship between head count and volume is straightforward: more heads suit smaller parts where cycle time is dominated by cooling, while a single head on the same platform suits large 10 L bodies where parison weight dominates. Because heads can be isolated, the machine glides between one, two and three parisons as the order book changes, which is exactly the flexibility a contract moulder needs.
- Three heads: multiple parisons per cycle on a compact platform.
- 5 ml to 10 L: one machine spans laboratory to industrial containers.
- Recipe memory: up to 40 mould data sets recalled instantly.
- PE and PP standard: plus PVC, PA, PC, PS and EVA with tuning.
- Straight and oblique blow: matched trimming for every neck style.
Volume Range at a Glance
| Volume Band | Typical Part | Heads Used |
|---|
| 5-50 ml | Dropper, mini bottle | 1-3 |
| 50-500 ml | Shampoo, cosmetic bottle | 2-3 |
| 0.5-2 L | Detergent, oil bottle | 1-2 |
| 2-10 L | Jerrycan, wide-mouth jar | 1 |
| Max capacity | - | 10 L |
Where It Fits
Contract moulders that switch jobs weekly gain most, because the changeover cost is a mould swap and a recipe recall. Packaging houses adding a short-run SKU also value a platform that avoids a dedicated line, and technical moulders use it for PE ducts and panels on the larger end of the range. In each case the appeal is the same: one machine, many jobs, no compromise on cycle time.
From an engineering standpoint, matching head count to part size is the single decision that most affects cycle economics. A mould shop that maps its order book to the volume table above can usually run every job on one platform, which is simpler to staff, simpler to spare-part, and simpler to qualify with a customer's quality team.
Product Q&A
Q: Do all three heads run at once?
A: They can, or heads can be isolated, so the machine glides between one, two or three parisons.
Q: What limits the maximum volume?
A: The ceiling is 10 L, set by platen size and clamp force of 200 kN.
Q: How fast are changeovers?
A: With 40 stored recipes, settings are recalled in seconds.
Packaging & Quality Assurance
Standard export packaging, 25-35 working days, CE and ISO9001:2008 certified, with guard-door safety interlocks. Share your volume bands and we will confirm head configuration for your three head HDPE blow molding machine.
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