As a well-known plastic pipe manufacturer in South Korea, KPC performs melt flow index tests on PP, PE, and other material grades every day. This is a critical step to ensure that their pipes meet performance standards. However, before introducing our automatic melt flow indexer SL-MF41, the laboratory team at KPC was stuck in a "triple dilemma" — racing against time and accuracy.
Challenge: The Triple Dilemma of Traditional Melt Flow Testing
Dr. Li, head of KPC's laboratory, pointed out that using traditional manual melt flow indexers presented three major challenges daily, severely impacting QC efficiency and data stability:
1. Manual Weight Handling— Low Efficiency and High Risk
Different material grades require different loads . The 5kg weight commonly used for PE pipes had to be manually handled and installed each time, taking 3–5 minutes per test. With dozens of tests each day, this was not only inefficient but also posed constant safety risks of injuring staff or damaging equipment.
2. Repetitive Parameter Setup— Prone to Errors
Each material grade has its own specific test parameters (temperature, load, cutting interval). Every time operators switched between grades, they had to manually re-enter a series of parameters. Frequent manual input easily led to errors, resulting in invalid test results and wasted time.
3. Frequent Changeovers— QC Becomes a Bottleneck
KPC tests nearly 10 different material grades daily. The need for frequent parameter adjustments put tremendous pressure on the QC department. Production lines often had to wait for test results, making the QC process itself a bottleneck that restricted production efficiency.
Solution: Two Major Transformations Brought by the SL-MF41
To address KPC's pain points, we provided them with the fully automatic melt flow indexer SL-MF41, equipped with an automatic weight loading system and test method storage functionality. This fundamentally solved the above problems:
Transformation 1: Automatic Weight Loading — Eliminating Manual Labor
The SL-MF41 has a full set of standard weights built in. The instrument automatically loads the required weight based on the selected test method, completely eliminating manual handling.
· Fast Response: For the 5kg load test, the automatic loading process takes only 10 seconds — an 80% improvement over manual operation.
· More Stable Data: Fully automatic control of the loading force eliminates human error, improving data repeatability by 30%.
· Complete Safety: The safety risks associated with manual weight handling are eliminated, especially in high-load testing scenarios.
Transformation 2: Method Storage — One-Touch Recall, No Repetitive Setup
The instrument allows users to save complete test parameters for each material grade as a dedicated method. For subsequent tests, simply select the corresponding grade and start — no need to re-enter parameters.
Scenario Example
The PP-B pipe material commonly used by KPC (test conditions: 190°C, 2.16kg load, 30-second cutting interval) is pre-saved as the "PP-B-001" method.
One-Touch Smart Test
When recalling this method, the instrument automatically completes all steps — temperature preheating, weight loading, cutting interval setup. The operator only needs to load the sample, select the method, and press "Start" to set the test in motion while attending to other tasks.
Results: 60% Efficiency Gain — Significant Reduction in Labor and Time Costs
Three months after introducing the fully automatic melt flow indexer SL-MF41, the QC efficiency at KPC's laboratory saw a remarkable improvement. Dr. Li commented:
"Now, our technician just needs to load the sample, select the grade, and press start. Then he can walk away and handle other work. The instrument automatically completes the entire test. Previously, one person could only operate one machine. Now, one person can easily handle two units simultaneously. QC is no longer a bottleneck holding up production."
Conclusion
For multi-grade, high-frequency plastic material testing scenarios, the fully automatic melt flow indexer SL-MF41 delivers more than just simplified operation — it brings a complete automation upgrade to the QC process. It liberates technicians from tedious, repetitive, and even physically risky labor, enabling higher QC efficiency, more stable data, and smoother production. This ultimately helps manufacturers shorten delivery cycles and improve product quality consistency. Moving forward, we will continue to refine our products based on real customer needs, empowering more plastics processors to achieve intelligent upgrades in their QC operations.