Quick Answer: Not Always. Purging Compounds are designed to clean a wide variety of resins, but chemical and thermal differences often influence performance. That’s why a short trial is always recommended to confirm compatibility and avoid unexpected results.
Why Compatibility May Fail
Resins don’t all behave the same under heat and cleaning action. For example:
- Engineering Plastics may require higher melt temperatures.
- Colorants and Fillers (like glass or talc) can create stubborn residues.
- If a Purging Compound isn’t suited to the resin, it may fail to remove degraded polymer or leave behind its own residues.
This can lead to streaks, black specks, or surface finish defects. Reviewing compatibility data and recommended run ranges before use helps minimize these risks.
Common Material Risks
- Thermal Mismatch: If the purge compound degrades at the resin’s processing temperature, it won’t clean effectively.
- Pigment Residues: Dark pigments and carbon deposits require stronger purging action.
- Filled Resins: Additives like glass, talc, or flame retardants can trap contamination in dead zones.
- Clear parts: Any residual purge is visible, so clear-safe or food-grade options are best.
UNICLEANPLUS provides detailed guidance on resin families and processing ranges to help users select the right product.
Why a Trial is Essential
Running a short trial prevents costly scrap and downtime. During testing, plants should evaluate:
- How quickly the old color clears
- Whether black specks are eliminated
- The amount of purge used
- Any residue left on finished parts
To make this easier, UNICLEANPLUS offers a Purging Compounds Free Sample program, allowing manufacturers to test directly on their machines before purchasing in bulk.
How UNICLEANPLUS Supports Trials
UNICLEANPLUS supplies different grades to suit varied applications:
- Pellet Grades (UC’A / UC’C): Reliable for most standard purging needs.
- Liquid Emulsion Grade (UC’L): Blends with resin (2–10%) to tackle stubborn contamination. Works across a wide temperature range (~160–420 °C).
Along with these, UNICLEANPLUS provides clear, step-by-step purge instructions for injection molding, extrusion, and hot runner systems.
Trial Checklist for Plant Teams
- Record the current resin, processing temperature, and screw speed.
- Request a Purging Compounds Free Sample suited to your operation.
- Follow the recommended purge procedure (mixing ratios or feed volumes).
- Run short shots and check for streaks or specks.
- Track purge usage and time to clear to calculate ROI.
- If results are positive, scale up to larger trials before full adoption.
Final Note — Practical Rule of Thumb
The golden rule is simple: always test before scaling up. A short trial confirms compatibility, saves resin, and reduces scrap. With the Purging Compounds Free Sample program from UNICLEANPLUS, plants can validate results on their own machines with technical support, ensuring choices are based on data—not guesswork. Request your Purging Compounds Free Sample today and see the difference first-hand.