This method describes a horizontal plane procedure for the determination of the coefficient of static and
kinetic friction of paper measured when sliding against itself.
The horizontal instrument requires some means of movement of the specimen in relation to the surface
upon which it rests. The coefficient of friction (COF) is measured directly from the resistance to tangential motion and the applied weight pressing two pieces of paper together.
Static COF relates to the force required to initiate movement between two surfaces while kinetic COF
relates to the force required to cause continuation of the movement at uniform speed.
The determinations of COF for packaging materials is described in TAPPI T 815 "Coefficient of Static
Friction (Slide Angle) of Packaging and Packaging Materials (Including Shipping Sack Papers, Corrugated and Solid Fiberboard) (Inclined Plane Method)." In the method for testing packaging materials, the force measurement is often made on the third slip, while in this method the determination is made on the first slip.
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| Number of Pages : | 7 |
| Published : | 2020 |
