Elmendorf tearing tester
Rapid and precise way to evaluate tear resistance
The electronic Elmendorf tearing tester features a touch-screen panel that allows for a simple one-touch process to run tear tests and track data. Two different pendulums are available with various augmenting weights. The ProTear Tester offers several capacity configurations. MAP4 Software can be used to evaluate the tear strength with the dynamic tear data calculated at every point of the test to allow for real-time data as the sample tears.
Trust the Thwing-Albert Electronic ProTear to measure Elmendorf Tear
Strength of a variety of materials. Thwing-Albert is the original
manufacturer of the Elmendorf Tear Tester which was designed by
Dr. Thwing and Mr. Armin Elmendorf. This method developed over a
century ago established the industry standards used worldwide today
to measure tear strength.
The ProTear provides a rapid and precise way to evaluate the tear
resistance of sheet materials including paper, textiles, roofing products,
plastic film, and foils.
The electronic model features a touch-screen panel that allows for a
simple one-touch process to run tear tests and track data. Two different
pendulums are available with various augmenting weights and can be
configured to meet capacities from 200g-12,800g. MAP4 Software can
be used to evaluate the sample test results with dynamic tear data
calculated at every point of the test to allow for real-time data as the
The operation of the ProTear is easy —simply secure the sample in the
clamps, make an initial tear and press test to release the pendulum.
The tearing resistance of the material is measured via the transference
of the potential energy stored in the raised pendulum to kinetic energy.
A portion of this energy is absorbed during the tearing of the sample
and is used as a measure of the resistance of the material to a continuing
tear. The energy required to tear the sample is reported as a percentage
of the pendulum capacity or force.
The Electronic ProTear calculates all test results and statistics
automatically and displays them immediately. Data can be exported
to a PC, directly printed or analyzed in more depth using MAP4 materials
Precision and accuracy are increased by capturing dynamic tear data in
real-time digitally. The capacity can be changed quickly with easy-mount
technology for pendulum installation that does not require tools.
Testing capacity ranges from 200g up to 12,800g allowing for a variety
of applications with one machine.
The touch-screen display allows for quick clamping and testing.
Lab technicians can easily customize units of measurement and
reporting styles in the menu. Other functions include data entry of
sample information such as sample ID, thickness, basis weight,
sample direction and number of plies being torn.
MAP4 software is available for customers that would like to run
detailed reports and have access to in-depth data. A preloaded test
will be available and is configured to meet the industry standards
from ASTM, TAPPI, and others. The program includes a SQL Lite
database. MAP4 will provide a real-time data curve at the same
time as the results are being displayed.
- Electronic ProTear; Automatic result calculation, PC access etc.
- Mechanical ProTear; Basic tear tester, manual read out scale etc.
- Heavy-Duty ProTear; Available as both mechanical or electrical etc.
- Spencer Impact Attachment; To comply to ASTM D3420-94.
- DIN 53862
- DIN 53128
- ISO 1974
- BS EN 21974
- TAPPI T414
- TAPPI T496
- ASTM D295
- ASTM D751
- ASTM D1424
- ASTM D1922
- SCAN P11