SLD-01 Detecting instrument Film Tear Strength

Application 

Tear resistance is one of the important mechanical parameters of material. Tear resistance (or tear strength) is a measure of how well a material can withstand the effects of tearing. It is a useful engineering measurement for a wide variety of materials by many different test methods. SLD-01 tear tester is a standard test for determining the tear resistance which is named after its inventor, Armin Elmendorf. The Elmendorf test determines the average force required in grams or mN to tear a sample after the tear has been started. In conducting the test, one or more sheets are torn through a fixed distance by means of a pendulum. The effort expended in tearing is measured by the loss of potential energy of the pendulum.

Test Process 

A cutting knife in the tester is used to create a slit in the sample which ends 43mm from the far edge of the sample. Acting by gravity, the pendulum is released to propagate the slit through the remaining 43mm. The energy loss by the pendulum is used to calculate an average tearing force.

Technical Features 

It's a PLC controlled unit (industrial level stable) and HMI touch screen operated. All parts are strictly standard conformed. With our precision in design, we equipment checking weight that can be used to calibration different test range. For paper users, we can add units of mN and tear index parameters.

1. 1. PLC technology and human-machine interface.

2. 2. Wide test range for different materials

3. 3. Pneumatic specimen clamping

4. 4. Pendulum automatic release

5. 5. Data auto statistics, storage

6. 6. Microprinter

7. 7. RS 232 port and professional software(optional)

Key Data

Pendulum Capacity(gf)     200,400,800,1600,3200,6400

Gas Source     0.6 MPa 

Tearing Arm     104±1mm 

Tearing Initial Angle     27.5 ±0.5° 

Power     AC110~220V 50/60Hz