1. Scope*
1.1 This test method covers determination of the coefficients
of starting and sliding friction of plastic film and sheeting when
sliding over itself or other substances at specified test conditions.
The procedure permits the use of a stationary sled with
a moving plane, or a moving sled with a stationary plane. Both
procedures yield the same coefficients of friction values for a
given sample.
NOTE 1—For the frictional characteristics of plastic films partially
wrapped around a cylinder, or capstan, see Test Method G143 under the
jurisdiction of ASTM Subcommittee G02.50.
1.2 Test data obtained by this test method is relevant and
appropriate for use in engineering design.
1.2.1 As an option to this test, coefficient of friction may be
run at temperatures other than 23°C by heating only the plane
while the sled is at ambient temperature.
1.3 The values stated in SI units are to be regarded as
standard. The values given in parentheses are for information
only.
1.4 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. For a specific
precautionary statement, see the end of 6.5.