Case Study:
Reducing 16-Cavity Imbalance from 7.8% to 0.8% Using Cav-Bal®Study details
| Item | Case study value |
|---|---|
| Tool type | 16-cavity hot runner mould |
| Study type | Short-shot cavity balance |
| Data per stage | 3 shots per profile |
| Starting condition | Flat hot runner profile |
| Final result | Profile 3 |
| Starting measured imbalance | 7.845% |
| Final measured imbalance | 0.812% |
| Overall reduction in measured imbalance | Approximately 90% |
The study was carried out using three shots at each stage. This helps reduce the risk of judging the balance from one unusual shot and gives a clearer view of the cavity pattern. Single shot measurements can be used as required.
Cavity Balance Correction Summary
A 16-cavity hot runner study was carried out using Cav-Bal® with three short-shot measurements per profile. The tool started with a measured cavity imbalance of 7.845% on a flat hot runner profile.
After applying calculated Cav-Bal® profile corrections, the imbalance reduced progressively through the study:
7.845% → 4.092% → 2.254% → 0.812%
This represents an approximate 90% reduction in measured imbalance from the starting condition.
The study demonstrates how Cav-Bal® can turn short-shot cavity weight data into practical hot runner tip corrections, helping engineers move away from trial-and-error balancing and towards a more structured, documented method.
Screenshots from Cav-Bal®
Why this matters
In many moulding environments, cavity balancing is still done by judgement and repeated trial work. That can be slow, subjective, and difficult to document.
Cav-Bal® gives engineers a data driven method:
- measure cavity weights,
- calculate a corrected hot runner profile (calculated automatically in the software),
- run the next profile,
- review the measured response,
- continue only as needed.
The case study shows the process moving from a significant cavity imbalance to a highly balanced result in a small number of calculated steps.
Imbalance From Mean Graphs
Get Cav-Bal®
Cav-Bal® helps injection moulding engineers calculate hot runner tip corrections from short-shot cavity weight data.To learn more about Cav-Bal® or request access to the software contact Moulding Optimisation Ltd.