Method A vs. Method B: Which One Do You Need?
A detailed comparison of the two impact testing modes defined in ASTM D1709 and ISO 7765.
One Machine, Two Standards
The MLB-01 is a dual-mode tester, meaning it physically transforms to meet two distinct testing requirements found in ASTM D1709 and ISO 7765-1. But which one should you use?
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Method A: The Standard for Thin Films
• Drop Height: 0.66 meters ± 0.01m (26 inches).
• Dart Head: 38 mm ± 1 mm diameter (Phenolic or Aluminum).
• Target Material: Standard Low-Density Polyethylene (LDPE), Laminated Films, Food Packaging.
• Impact Energy: Lower energy range. Ideally suited for films that break under lighter weights.
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Method B: The Standard for Tough Materials
• Drop Height: 1.50 meters ± 0.01m (60 inches).
• Dart Head: 50 mm ± 1 mm diameter (Stainless Steel).
• Target Material: Heavy-duty shipping sacks, Agricultural films, Geomembranes, Stretch Wraps.
• Impact Energy: High energy range. Used when a film is so tough that it won't break even with the heaviest weights at 0.66m.
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How to Switch on MLB-01?
Switching modes on the MLB-01 is simple:
1. Mechanical: Adjust the tower height and swap the dart head (threaded design).
2. Digital: Select "Method A" or "Method B" on the touchscreen. The system automatically adjusts the calculation parameters.
