Direct Answer: The Free‑Falling Dart Impact Tester determines the impact resistance (dart drop) of plastic films per ASTM D1709 by dropping a standardized dart from a specified height and observing pass/fail or energy to failure.

What does this tester measure?

It measures the impact resistance (toughness) of thin, flexible plastic films and sheeting. Results indicate a film’s ability to withstand sudden impact or puncture during handling, converting, and packaging.

Which standard and methods does it follow?

• ASTM D1709: Standard Test Methods for Impact Resistance of Plastic Film by the Free‑Falling Dart Method
• Methods: Method A and Method B (weight increment approaches and heights per the standard)

How does the test work?

A dart of specified geometry and mass is released from a defined height onto the film specimen. By adjusting the mass increments between trials and recording pass/fail outcomes, the instrument determines the impact energy or critical dart weight causing failure.

Key features

• Rigid frame with precise, repeatable drop mechanism
• Interchangeable darts and mass sets for Method A and Method B
• Secure specimen clamping and quick-change film mounting
• Optional digital capture/recording and guided calculations
• Durable, lab‑grade construction for high test throughput

Typical applications

Quality control and R&D of packaging films, shrink films, and protective sheathing where puncture/impact resistance is critical to performance.

What results do you obtain?

• Critical dart weight (g) at failure (pass/fail statistics)
• Impact energy estimation per method guidance
• Comparative toughness metrics across film lots and formulations

Notes

Configured for ASTM D1709 Method A and Method B. If a different standard is required on your page content, the setup can be adjusted accordingly.

FAQs

Which materials can be tested?
Thin plastic films and sheeting used in packaging, shrink applications, and product protection.

Does it support both methods?
Yes, it supports Method A and Method B through interchangeable mass increments and specified drop heights.

How are results reported?
As the dart mass (or energy) causing failure, along with pass/fail counts per the statistical approach in the standard.