Spencer Impact Tester – ASTM D3420

The Spencer Impact Attachment was developed for use with Thwing-Albert’s Elmendorf Tear Tester.  It provides a convenient method for determining the impact resistance of plastic films and packaging materials under conditions that closely approximate the strain rates that the material is subject to in end-use applications.

Complies with ASTM D3420

Description

  • The Spencer Impact Attachment was developed for use with Thwing-Albert’s Elmendorf ProTear Tester. The material is clamped and the pendulum with a probe on the end swings and punctures the material
  • It provides a convenient method for determining the impact resistance of plastic films and packaging materials under conditions that closely approximate the strain rates that the material is subject to in end-use applications.
  • Extremely consistent, the Spencer Impact Attachment provides one of the most repeatable methods of testing impact resistance of plastic film.
  • The air-operated clamping assembly automates the clamping mechanism to ensure an even higher level of accuracy.
  • The touch-screen control panel allows you to change the setup to calculate energy per the ASTM standard.

The Spencer Impact Attachment was developed for use with Thwing-Albert’s Elmendorf Tear Tester. It provides a convenient method for determining the impact resistance of plastic films and packaging materials under conditions that closely approximate the strain rates that the material is subject to in end-use applications. Extremely consistent, the Spencer Impact Attachment provides one of the most repeatable methods of testing impact resistance of plastic film. The air-operated clamping assembly automates the clamping mechanism to ensure an even higher level of accuracy.

The Spencer Impact Attachment is a modification to the standard ProTear Elmendorf Tearing Tester and consists of a curved metal arm that is permanently attached to the pendulum and is fitted on the end with an interchangeable impact head that is available in various shapes and sizes. This allows different materials and tests to be performed with one machine. An O-ring Sample Clamp is mounted at the top of the clamp upright. The pendulum swings the impact head through the clamped specimen with sufficient force to puncture the sample, and the energy used is recorded.  This fixture allows customers to meet the ASTM D3420 standard for pendulum impact resistance of plastic films.  

Features

  • Complies with ASTM D3420
  • Air clamp assembly – min 60 PSI
  • Pendulum capacities of 200, 400, 800,1600, 3200, 6400 or 12,800 gram available
  • Calculated Statistics — average, high, low, standard deviation, range & variance
  • Configurable reports

Additional information

Industry

Plastic Film

List of Standards

ASTM D3420

Model Name

Spencer Impact Tester

Part Number

60-2016

Testing Property

Elmendorf Tear, Impact, Puncture

Youtube Video

v66BVpDWPHY?autoplay=0&rel=0

Downloads

Spencer Impact Tester

Elmendorf ProTear