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CAT NO: DIDACTICNLE-Export-370010
Slip Tester for Plastic Films For Testing Lab Workshop.
Slip Tester for Plastic Films - For Testing Lab
The force needed to cause slipping between two surfaces of any plastic film depends on its co-efficient of friction.
The
coefficient of friction is the ratio of the frictional force and
normal pressure acting on two surfaces in contact with each other. Thus
it is an inverse measure of the relative ease with which a material will
slide over a similar or different material.
The Slip Tester for
plastic films is designed to determine both static and dynamic
co-efficients of friction between two flat surfaces of flexible plastic
films. It consists of a rigid, smooth, and horizontal platform for
mounting the test specimen on and an arrangement to measure frictional
force between the test specimen mounted on it and a movable sled.
The
horizontal platform is provided with a channel around its periphery for
providing vacuum clamping to the film under test. A steel sled having
its bottom face lined with a 3 mm thick layer of micro-cellular foam
sheet is kept on top of the test specimen mounted over the platform. The
sled is moved at the specified speed with the help of a screw mechanism
driven by an electric motor. It is also connected to a load cell for
measurement of frictional force acting on it. A peak force display
arrangement enables the maximum force exerted during the slipping
operation to be recorded and displayed when desired. Arrangement to
automatically stop the movement of the sled at the extreme ends of
travel of the load cell is also provided.
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