Logistics & Industrial Films
Surviving the Modern Supply Chain
Stretch wraps, shrink films, and heavy-duty shipping sacks (FFS bags) face a harsh environment: sharp pallet edges, metal corners, forklift tines, and stacking loads. Even if a film meets its nominal thickness specification, poor impact resistance can translate into broken pallets, leaking bags, and safety risks on the warehouse floor.
Falling dart impact testing provides a repeatable way to compare different films, suppliers, and downgauged structures under controlled yet realistic high-energy impact conditions. This is especially important when switching to thinner films or alternative resin systems for cost or sustainability reasons.
Method B for High-Energy Impact
For tougher, thicker films within the standard’s thickness scope, ASTM D1709 and ISO 7765-1 recommend Method B. Method B uses a larger hemispherical dart (about 50 mm) dropped from 1.50 m, with heavier weights to reach higher impact energies.
On the MLB-01, Method B provides:
- Height: 1.50 m drop for higher energy impact events, configured with a dedicated tower height setting.
- Dart Head: 50 mm stainless steel dart head to match Method B geometry.
- Weight Capacity: Up to 2000 g dart assemblies using fixed increments (such as 15 g, 45 g, 90 g), allowing users to reach the required failure range for industrial films.
This configuration simulates high-force impacts such as:
- Puncture by sharp pallet or crate corners during forklift handling.
- Sudden impacts on stretch-wrapped pallets during emergency braking or drops.
- Localized loading on heavy FFS sacks for chemicals, resins, or fertilizers.
