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ASTM D 4918 Document Information:
Title
Standard Test Method for Coefficient of Static Friction of Uncoated Writing and Printing Paper by Use of the Inclined Plane Method
ASTM International
Publication Date:
Dec 10, 1997
Scope:
This test method describes a procedure for the determination of
the coefficient of static friction of paper measured when sliding
against itself. The inclined plane procedure is used.
Although this test method is basic in concept, the precision
statement has been developed on uncoated writing and printing
papers. While the use of this test method is recommended for those
grades only, it may be used with other types of paper giving
specific attention to special paper characteristics and with the
understanding that the precision may not be the same.
Static coefficient of friction (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. Kinetic COF cannot be measured by this
test method. Both static and kinetic COF can be measured by Test
Method D 4917.
A horizontal plane method is described in Test Method D 4917,
which gives similar results. The choice of approach depends upon
the equipment available and the means of measurement.
The determination of this characteristic for corrugated and
solid fiberboard is described in Test Methods D 4521 and D 3247.
The test methods differ in that, in Test Methods D 4521 and D 3247,
the two specimens are allowed to slip upon one another three times
before the angle of inclination is determined, while in this test
method, the angle is determined on the first slip.
This standard does not purport to address all of the safety
concerns, if any, associated with its use. It is the responsibility
of the user of this standard to establish appropriate safety and
health practices and determine the applicability of regulatory
limitations prior to use.
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