Why Multi-Cavity Blow Moulds Increase Profitability
A 2-cavity PET blow mould produces two bottles per machine cycle — effectively doubling your output on the same machine without any additional capital investment in equipment. For mineral water bottlers, beverage manufacturers, and FMCG companies running high volumes, multi-cavity moulds are the most cost-effective way to increase production capacity.
The economics are straightforward. Consider a 500ml water bottle production line running 1 million bottles per month. Upgrading from a 1-cavity to a 4-cavity mould increases output fourfold from the same machine. The mould cost increase is typically 2.5–3x (not 4x, because structural elements are shared) — meaning the incremental investment pays back within 2–3 months of production.
Cavity Options and When to Use Each
- 1-cavity mould: Best for trials, pilot production, and small volumes up to 500,000 bottles/year. Fastest to manufacture, lowest upfront cost.
- 2-cavity mould: Doubles output. Ideal for small to mid-sized operations — 500,000 to 1,500,000 bottles/year on a single machine.
- 4-cavity mould: The most popular choice for serious producers. 1.5–5 million bottles/year per machine. Best ROI for most Indian water and beverage brands.
- 6-cavity mould: High-volume production lines — 5 million+ bottles/year. Requires machine with sufficient clamping force (typically 80kN+ per cavity).
Precision Consistency Across All Cavities
In multi-cavity moulds, cavity-to-cavity consistency is the critical quality factor. If one cavity in a 4-cavity mould produces bottles 0.5g heavier than the others, your fill line weight checks will fail and production efficiency drops. Ultra Mould uses CNC precision machining to ensure all cavities in a multi-cavity mould are identical in dimension, wall profile, and surface finish — delivering uniform bottle weight and quality across your entire production run.
Machine Compatibility for Multi-Cavity Moulds
Not every Indian machine can run 4 or 6 cavities. Clamping force, platen size, and machine stroke must be sufficient. Ultra Mould assesses your machine model before recommending a cavity count — ensuring your multi-cavity mould runs at full speed without machine stress.
⚠️ We do not supply moulds for Sidel, Krones, Nissei ASB, Bekum, or Kautex machines.
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