If you’ve been running injection molding lines long enough, you’ve likely faced it — black streaks, burnt resin, color contamination, and unexpected machine downtime. But while material choice and machine settings often get the blame, one often ignored element silently disrupts productivity: the purging process.
You may be cleaning the screw and barrel regularly. But are you using the right Purging Compound for Injection Molding — or just flushing with the next available resin?
Let’s take a closer look at what manufacturers often miss — and how it’s costing production time, material, and quality.
What Happens Inside When You Don’t Purge Right?
Each time you switch colors, resins, or pause the machine, residues cling to the barrel, screw, and hot runner systems. These leftovers don’t just vanish. They carbonize, degrade, and start surfacing in your next shot as contamination.
This leads to:
- Product rejects due to black specs or color streaks
- Slow color/material changeovers
- Screw wear from abrasive carbon deposits
- Downtime that eats into your cycle time and throughput
Still using virgin resin or regrind to purge? That’s like rinsing oil paint with water.
Here’s What You Might Be Missing
- Using the Wrong Purging Material
Resin isn’t designed to clean. Specialized compounds, like those from UNICLEANPLUS, are engineered to remove degraded material and carbon build-up at a molecular level. - Not Considering Machine Type or Application
Every machine isn’t equal. A one-size-fits-all purging approach often fails. Choose a Compound formulated for your application — whether it’s color change, resin change, shutdown, or black specs removal. - Ignoring Processing Parameters
Backpressure, screw speed, and temperature settings affect how the Purging Compound performs. Manufacturers often underestimate the role of controlled purging cycles. - Assuming Faster Means Cleaner
Fast isn’t always efficient. A high-speed purge without proper soak time can leave contaminants behind, especially in hard-to-reach areas. - Skipping Preventive Purging
Purging only when issues arise? That’s damage control. Scheduled preventive purging maintains consistent output and reduces long-term wear.
A Smarter Purging Strategy with UNICLEANPLUS
With Purging Compound for Injection Molding from UNICLEANPLUS, you’re not just flushing plastic — you’re maintaining the integrity of your system. Their specialized solutions target black specs, color residues, and degraded materials without requiring machine disassembly.
It works across various resins and equipment types, supporting both mechanical and chemical purging actions. The result?
- Quicker material changeovers
- Clean barrel interiors
- Fewer rejects
- Longer equipment life
Want Cleaner Transitions and Smoother Operations?
Visit www.unicleanplus.com to explore the complete range of Purging Compounds for Injection Molding and discover the formula suited to your exact needs.
UNICLEANPLUS delivers industrial solutions that move your production forward — without the hidden build-up.