What seems like a minor defect can quickly snowball into hours of downtime.

Here at NS KUNSTSTOFFTECHNIK - CZ, we’ve heard many horror stories of how injector blockages can disrupt production, causing downtime, part defects, and unnecessary maintenance costs.

Often the result of material degradation from overheating, contaminants in the resin, poor purging practices or inconsistent temperature control, these issues don’t just affect machine performance, they impact delivery timelines, quality assurance, and customer satisfaction.

Not something we are prepared to forgive given our obsession with quality and on-time, every-time delivery, here’s how we tackle it, and some of the real-world maintenance practices we’ve implemented to keep our injection molding lines running smoothly:

✔️ Routine Purging

We use high-performance purging compounds regularly to clean out residual material and carbon buildup, especially during material or color changes.

✔️ Moisture Management

Our team monitors dew point levels and uses desiccant dryers to ensure hygroscopic materials like PA and PET are properly conditioned before processing.

✔️ Thermal Monitoring

Real-time temperature sensors on barrels and nozzles prevent overheating and material degradation from happening in the first place.

✔️ Preventive Maintenance Logs

Every injector cleaning, nozzle inspection, and purge cycle is tracked in our digital system. This helps us reduce unplanned downtime by tens of percentage points.

Blocked injectors aren’t just a technical issue, they’re a signal that a process needs attention. With the right maintenance strategy, you can prevent costly disruptions and keep your production line efficient and reliable.

If defects are slowing down your production, or if you’d like to compare maintenance strategies, we’d be glad to exchange insights. Let’s talk!