Holiday machine shutdown without production chaos after Christmas
As the Christmas and holiday season approaches, many production facilities prepare for extended machine shutdowns. Machines are often idle for several days or even weeks, and this is exactly where costly restart problems frequently begin.
Not because machines are switched off…
but because they are not sufficiently protected during the shutdown period.
If polymer residues remain in the barrel and screw without protection, this leads to oxidation, carbonization and hardened deposits.
The result after the holidays? Unstable startups, scrap and unnecessary downtime.
Why holiday shutdowns cause so many restart problems
During extended shutdown periods, remaining polymers in hot zones begin to degrade and oxidize. This leads to:
- Carbonized deposits in the barrel and screw
- Hardened material in dead zones
- Black specks at production restart
- Contamination of the first production batches
- Longer start-up times after the holidays
These problems are not caused during restart, they are created during the shutdown.
The real goal: Protect your machine during shutdown with Dyna-Purge
The aim is not only to clean before shutdown.
The real goal is to leave Dyna-Purge inside the machine to prevent oxidation and material degradation during downtime.
By completely filling the barrel with Dyna-Purge purging compound:
- A protective layer is formed inside the barrel
- Oxygen contact with hot metal surfaces is prevented
- Oxidation and carbon buildup are minimized
- Screws and barrels are protected during long shutdowns
- A much cleaner and more stable restart is ensured
This makes Dyna-Purge not only a cleaning solution, but a protective solution for planned shutdowns.
Best practice: Shutdown procedure using Dyna-Purge
Below is the recommended shutdown process according to the technical guidelines:
- Standard cleaning and preparation
- Run Dyna-Purge through the machine until the discharged material is clean.
- Maintain normal temperature and screw settings.
- Retract the injection unit so the material can exit freely.
- Protective filling before shutdown
- Ensure that the barrel is completely filled with Dyna-Purge.
- Stop the screw rotation.
- Gradually reduce or switch off the heating zones.
⚠ Important:
While the Dyna-Purge material is hardening, do not rotate the screw.
This step is critical to prevent internal damage and ensure full protection.
Restart after shutdown; done properly
After a prolonged machine shutdown, a controlled restart is essential.
With a correctly prepared shutdown:
- Startups become more predictable
- Startup scrap is minimized
- Less manual post-cleaning and troubleshooting is required
Recommended steps:
- Heat the machine to 10°C above the minimum processing temperature of Dyna-Purge
- Slowly rotate the screw to avoid excessive torque
- Flush Dyna-Purge out with the new production material
- Inspect output material for contamination before full production start
The business impact
For injection molding and extrusion companies, every lost hour after shutdown results in direct productivity and cost losses.
A shutdown protection concept using Dyna-Purge delivers:
- Faster return to production after the holidays
- Less startup scrap
- Reduced maintenance interventions
- Improved machine availability
- Higher Overall Equipment Effectiveness (OEE)
And ultimately: no unpleasant surprises when production restarts in the new year.
Prepare your machines for your holiday shutdown
Before switching off your machines this holiday season, ensure they are properly prepared.
With Dyna-Purge purging compound, you protect your equipment, simplify the restart, and begin the next production phase in a clean and controlled way.
👉 Request a free Dyna-Purge sample or contact our technical team for shutdown preparation support.
Order Dynapurge Today!
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