Further details:

The Friction Tester for plastic films is designed to find static and dynamic coefficients of friction between two flat surfaces of flexible plastic films. 

The horizontal platform is fixed on the base plate and the specimen is held over its surface with the help of pressure sensitive adhesive tapes. The other portion of the specimen is held on a metal sled having its bottom face lined with rubber foam.

The sled is kept over the specimen held on the platform and is made to move over the platform at the specified speech with the help of a screw mechanism driven by a synchroset electric motor. It is also connected to a load cell for measurement of frictional force acting on it. A digital display with peak force indicating arrangement enables measurement of both the instantaneous force and maximum force exerted during the slipping operation. Micro switches are provided to automatically stop the motion at the extreme ends of the travel of the sled.

Technical specification